I agree with you but even if the price falls everyday it Should pump anyhow because that's the nature of the market if I am not wrong, but I am not saying to start buy from tomorrow. Let's say I am investing 1$ from BTC price goes to 5k in upcoming days I started and price is dropping slowly but I will not stop even if the price goes to 3k, when the price gradually increases then definitely I can make more money where loss can be calculated as profit 3times. Just have a try I believe it will surely work and we can make more profit.

For others it could be compare as buying cigarettes or coffee everyday,
But $1 could also be enough for some people to feed their family those who are struggling to survive each day.
I personally like to follow your path on investing daily in crypto but I think it is better to keep it on Fiat first then wait for the price to get low so you could have more BTC.

Well acener, anyone who is choosing an appropriate amount to invest into BTC whether it is averaging out to $1 per day or some other amount that they believe is reasonable, needs to be assuring that they are choosing an amount that is clearly within a reasonable budget for them and sustainable... and they should be makoing sure to have their expenses covered.. so in that sense, they need to have an extra amount that is dedicated towards investing in BTC and not anticipating to be used in their expenses (even emergency expenses) for several years into the future.. hopefully 4 years or longer, but even 10, 20 or 30 years may well be reasonable for longer term planners and/or people who are young enough to plan that far into the future of their investments.

Personally, I do believe that once the budget is established, then such budget could be apportioned to also accomplish some attempt to buy on dips as well as continuing to invest on a regular basis (no matter what since none of us can really be sure about whether there will be a dip nor how much of a dip there will be if such a dip comes).   So personally I do believe that there are three categories of money that has been dedicated for investing and those are amounts dedicated for 1) buying right away, 2) DCAing and 3) buying on dips... and once anyone figures out their situation they can also figure out what works for them within those three categories of ongoingly accumulating a BTC position.

Best way is to buy low sell high.
Buy not low low but buy just low

This thread was posted almost an year back and now the values would have changed a lot. As per OP, if we had invested $1 every day in Bitcoin from 2015 to 2020, then we could have ended up with a profit of $20,405 from an investment of $1,858. But back then, the exchange rate was $9,276 per coin. It has increased to $32,646.59 as of now. Since nothing else has changed, the equation becomes something like this:

A profit of $71,815 from an investment of $1,858. That is an ROI of 3,865%. 

I think the analogy of investing 1$ every day for the next 5 years is only durable if you create a common pot to store that money.Otherwise, if you buy in every time you will get wrecked in fees. At least after the 5 year period your pot will be able to withstand the fees much better.

But, I think what's important here is not so much the logistics of saving $1 every day and how and where to put it, but more about the need to learn how to finance yourself better, and that investment is the way. And, that's the core of the message.

Perfect idea. He’s been doing that since January 2015. In that year it recorded the price of bitcoin at $200 and at the end of 2015 we recorded it at US$ 420.
That person’s profit in a year has  reached $220  multiplied by  $365, of  course  this is a  tremendous  result.  If  you  multiply it  by the  year  2021  today,
that would have made him a billionaire. But at that time bitcoin  was not as  popular as it is today.  There were  still many people who were not interested in
investing back then.