We regret about missing Bitcoin, then about XRP then about Ethereum then Doge then Shiba then Pepe (these are some top of my head and from what I've come across in my crypto term).
Point being there are always new opportunities and dwelling on regrets is futile.
I think the key is in your willingness to take risks. because new projects will continue to exist with potential advantages and disadvantages. because when a successful project appears, it will be followed by many failed projects. even after success, there will be those who will take advantage of the hype that ensues.
those who are careful in choosing and also brave in taking a gamble on a new project can take advantage. but some don't want to join any project other than their belief in Bitcoin.