Please address my perceived weaknesses of Bitcoin

First of all, I believe in the future of Bitcoin and DCA weekly as an investment. However, there seems to be 2 huge weaknesses that I'd like to learn more about from this community to satisfy my naivete:

1) Storage. It's complicated. Don't hold your coins in an exchange, not your keys not your coins, etc. If the goal is world adoption, then I feel like the barrier of entry is pretty high. For people to safely store coins, they have to buy on a trusted exchange, then transfer them to a hardware wallet where they are difficult to spend when the user is ready. To many, this process is confusing and expensive. Is there something I'm missing here?

2) Loss of coins. There will only ever be 21 million coins. However, any user that is safely storing off an exchange risks total loss if they forget/lose their keys. That is a huge risk. Sure, less coins in circulation may increase the value of those that remain, but on a long enough timescale, all could be potentially lost. I suppose hiding cash in your mattress until your house burns down is a comparable example, but that seems far less likely than losing your keys.