Nowadays most use Bitcoin as an investment, not only as a store of value. But after some more halvings and after Bitcoin is mature and widely adopted, the value may become rather stable and using it as investment may not bring such high reward.
And Bitcoin primary meaning is to be used as a coin. The store of value is a "secondary effect" of all good/successful coins (back in the days when inflation was big I kept my savings in USD/EUR!).
That's why the development goes in the direction to make the use of Bitcoin-as-a-coin go faster and better.

So I expect Bitcoin get used in 2130 as a coin much more than today.
I don't know how much of the transactions will be off-chain and how much on-chain, but we clearly have to keep miners happy even then (the problems will start much earlier than 2130 actually).


As said by @Deathwing, the network will continue to work even then, just at a lower difficulty, if the miners leave. But if the difficulty drops too much, at some point the network could become vulnerable to 51% attack. So ... we have to find long term solutions to keep the miners happy.

This is again the incomprehension of working with deflationary currency, it is the disease the Chicago school of economy has installed in most people brain's, so they can fear it and let "their model" "work.

Well no.

Deflationary money is money that doesn't lose value over time, therefore you don't need "a bank paying you interest". What you keep yourself, increases its purchasing power overtime, so you get an automatic incentive to NOT spend what you don't need (contrary to consumerism).

Once you DO decide to invest or spend, the money comes from a solid source. In the current dominant mentality, they'd rather you get in debt to buy as many things as you can, and then slave yourself paying it all back many times higher than if you had waited and saved to buy the thing.

One thing with deflation is you don't need banks as much, and banks should not be operating under fractional reserve, ie, fictional money that doesn't exist anywhere but is counted as it it where (90% of fiat money doesn't exist. maybe more, its a legalized ponzi scheme).

In the end, without the banks or the debt, you save your own money earned working, and trust that i will hold its purchasing value no matter what. And if you decide to spend it, you spend it and that's it. Austrian economists don't need fractional reserve, and therefore no central banks, and of course no fiat currency. They originally advocated for gold, but i think Bitcoin fits even better.

Fiat currency you want to get rid of it ASAP, as its constantly losing value. Bitcoin you keep as much as you can. and only use what you must.

If we are talking about the transaction volume happening now then it might not be appealing for the miners to run their hardware without any kind of block reward. But if you consider the mass adoption and favorable laws coming into our world going forward to that year then we might actually see an exponential growth of demand for Bitcoin's price as well as overall use for it. It might even be more ideal for miners to run their operations then with the big amount of transactions happening once that digital age rises. And that's me just talking realistically with the things I have been seeing now.

The network will continue to operate well. This is a sense of the Bitcoin blockchain, it will not die after the end of the mining

OP has a valid hypothetical question but my answer is a straightforward No! Bitcoin will not become inactive especially when all of it has been mined and thus will result to a more wider distribution of it.

I think there are two possible scenarios concerning mining that will come into play when all Bitcoin has been mined:

1. Bitcoin's price has achieved its ATH by then that mining it (even if the rewards comes from transaction fees) is still attractive or could be more profitable than the current mining situation right now.

2. Bitcoin's miners have ceased to do mining but will eventually be replaced by stakeholders, enthusiasts and supporters who want to "keep the network alive" and eventually protect the value of their Bitcoin holdings. So, mining will still continue no matter what. Imho.

This is just an imagined scenario and I am sure by that time (a more than a hundred years from now) Bitcoin has already evolved a lot and there is a chance that today's Bitcoin can be so radically different by that time. Anyway, I am sure that a better way can be done for this seemingly problem. Remember that Bitcoin just started in 2009 and we are talking here of a possible problem that can occur in 2140 so for me I better not think so much about it, this is just a waste of time. In most probability,  Satoshi Nakamoto could have surfaced at that time and he can be the one solving this problem. And I am just kidding...

This was my fear with the introduction on the side-chain technologies like the Lightning Network too, because most transactions will move off-chain and then there will be a significant drop in the on-chain transactions in the future.

Looking at it now, I realize that channels needs to be opened and closed and those actions will generate transactions in the future. A lot of other projects will also use smart contracts and these transactions will be done on-chain, so these projects will stimulate transactions in the future.

Bitcoin is just one giant experiment and a lot of businesses built their business around it, so I doubt that they would just leave it to die, they might create a mining project, just to maintain their core business, even if that is not profitable. <Cross funding from the profitable core business will fund the mining>  

With the current 18 million supply and $8800 worth, there are billions of volumes, therefore there will be much more than that in 2130. If the bitcoin was the only coin on the market, it could be right but the use of bitcoin to get others, and the possibility of being useful as a future payment, rejects what you say. Years later, there is even the possibility that it will be used instead of the states' money.

There is still very little reward for miners until you are willing to invest heavy amount on mining hardware and electricity bills. In my view when all BTC are mined by 2140 then transaction fee will be adjusted in a way to compensate nodes that are taking care of the BTC network.