Invest some of it, yeah. You have to realize how frigging volatile bitcoin is, though. There's nothing that says we have to stay at or break above $2500. We could be back down to $1500 or lower by tomorrow. Do I think that's going to happen? No, but it's possible. So if you're young and don't have a retirement plan and have extra money to play with, do it. But be ready to lose money...and hope you don't.
I wouldn't put too much into crypto.
I think it is not bad to invest some money in bitcoin. There is nothing impossible in bitcoin, because as we can see users, bitcoin has a lot of potentiality in the future so don't be worry and there is nothing afraid of with bitcoin.