Will I be rich??
Will I have lost all the money??
Will I have just make a few extra dollars??
Would you do it??
Bitcoin is totally reaching the height we can not imagine it can reach and the answer to your question that I am really thinking right now is yes! you can be super rich if the price would go straight up within that 10 years span you have a 3 BTC but forget about the forgetting part because you might forget the password instead then goodbye bitcoin and millions of earnings that you have right now, I think you just need to save and just go with your life and don't spend that 3 btc in 10 years and lets see what happens.