If the price stayed like this for four more years, would you be toast?
No, the price could drop to 0 and I wouldn't have a problem since I still earn fiat and have no other liabilities except a credit where I pay 25€ per month but I don't see this becoming a problem. The only problem I see would be if I lose my job, but that's a risk independent of bitcoin's price in my opinion. And I would have bigger problems then. I also feel pretty safe in my job (or easy to change jobs).
So I could tolerate the bear market indefinitely pretty much.
I basically just want to put my money where my mouth is without doing anything seriously stupid, haha