I do most of my investments on ethereum, and I believe in the future ethereum will save me a lot of money.

That's a choice you have to make after considering the market situation and other factors like the rate of growth and other factors like which coins are likely to gain value overtime than the other. eth IS a high quality coin and there are chances that it will add value  in the near future but i dont think that changing all your BTC to ETH IS worth it, BTC is still the crypto king, just don't give up on it too early

Sell your bitcoin and buy Ethereum?
I don't think this is correct. I think if you already have Bitcoin, I hope that you can continue to be patient. Bitcoin is the king of money. Bitcoin will rise in all currencies, and bitcoin will fall in all currencies. Fall, more stable and safer than Ethereum Bitcoin,

this could be done if he has a big amount in bitcoin so he can convert his bitcoin to ethereum. but if he only has less than 1 bitcoin, then I suggest to stay with bitcoin only and leave the ethereum. at least, ethereum needs bitcoin to adjust the price and no matter how much the increase in the ethereum price, bitcoin price will give us a big profit than ethereum.

I see indeed for the development of Ethereum has continued to experience a pretty good improvement. with its ability to grow to generate profits and an ever-increasing position. by replacing your Bitcoin to Ethereum will be very profitable with its current development is getting better.

are you delirious? please be aware. everyone wants to have bitcoin, and you want to trade it with ethereum. waow really confusing. please think again, do not be rash in making decisions.

In my own opinion, you should not do that because the market price of bitcoins today is still low to convert on ethereum, just wait for the price of btc to pump up again before converting into eth.

I do not think you need to exchange your bitcoin to ethereum, the more secure you have bitcoin than ethereum because bitcoin has a very limited total supply so that it can potentially generate enormous profits.

Ethereum is a good coin  now but  bitcoin is the most special and it is the king of the crypto market in terms of value as well as its influence and importance in the development of the crypto ecosystem. So, if you want to convert bitcoin to ETH, you should invest 50% on ethereum and 50% on bitcoin,

Both coin is much valuable and demand-able coins of crypto world and in long term you can earned a very good profit from both of them. If Bitcoin is the base currency of crypto industry, whereas Ethereum is the base platform of maximum Altcoins. But market follow the footstep of Bitcoin and where he goes, the market goes there.
So according to me stay with Bitcoin and if you have strong desire of buying Ethereum, then sell a small portion of Bitcoin and invest in Ethereum. But don't sell your whole Bitcoin for buying Ethereum.