My #1 concern is that Bitcoin cannot handle being popular, and if it gets more popular, there'll be big problems with expensive and time-consuming transactions. This is basically a concern about micro-transactions (so a daily life thing, yeah) and no user-friendly solution to this problem. #2 is probably that Bitcoin will never become stable enough to be used in daily life without referring to fiat and then adjusting the price in BTC. #3 is that Bitcoin will get killed by a critical bug nobody will notice in time.
Excellent list, and I have to say that if I thought about what my concerns are about bitcoin, my list would take inspiration from yours.
Your #1 concern is something that many bitcoiners ignore, along with the fact that most altcoins don't share the problem of long confirmation times and exorbitant fees during times of network congestion. Basically the only reason I'm not fixated on that problem is that I never intend to use bitcoin for purchases. It remains an investment for me and I'm not too concerned about sending it (usually).
That also relates to bitcoin's volatility, which also makes it a really bad currency. Again, that's one of the things I've come to expect and it's what makes it a good investment. I would be more concerned if bitcoin's volatility dropped to that of a stable coin. If that happened, do you think people would be so interested in it? I think not.
Not sure about your #3 and whether it could happen. Maybe the more technically inclined members of the forum could address that.