I've heard that Bitcoin will finish mining in 2140, which is certainly a long way off. There's still a chance for us to continue dca BTC, as there's a strong possibility that in the future we'll see a higher BTC price than today, as BTC is constantly being mined, and we'll eventually see the BTC supply dwindle. Currently, I know there's only a small amount of unmined BTC left, approximately 1,100,000. While the number currently mined is 19,900,000, there's still time to accumulate BTC.
However, I'd like to know if there will be BTC miners once the supply is fully mined, and will the fees for sending from wallets to exchanges be high? I also wonder if the price fluctuations will be similar to the current bearish and bullish market. Currently, BTC is widely traded, buying at a low price and selling at a high price. But will BTC trading be possible in the future, similar to daily trading? I think this is worth discussing...

Bitcoin has always being on the radar and the amount of unmined Bitcoin still has a long way before it can be completed distributed. After Bitcoin's mining process, I believe the price of Bitcoin would be 10x the current price possibly and the only way miners can earn can be through gas fees after total supply must have being exhausted.
We still have a long way to go until 2140 and that's a long time to accumulate as much Bitcoin using the safest method DCA.