I know its heresy but I'd really like to entertain a discussion on both sides regarding a concern of mine. What if transaction fees aren't enough to incentivize the miners to secure the bitcoin network? I think this is a potential problem we may see in the next few decades as the halving continues on. My hope is that we will have enough people using the bitcoin network to have a healthy fee market, but if we have weak periods like now where there are several unfilled blocks, wont miners just turn off their equipment as they are unprofitable? What options or solutions are being discussed to help mitigate this?
Satoshi left the solution to the free markets, if bitcoin reaches a massive level of adoption relatively quickly then this is not going to be too much of a problem and the miners will be able to depend almost exclusively on the fees they get from each block they mine.
Now if adoption is slower than that then miners will have to either shutdown their equipment, mine other coins or become more efficient, and if I am perfectly honest I do not see what is the problem with this scenario.