It really depends. If you're the last human on earth, you are privileged.
However, most people are forgotten quickly if they are not immortalised in human memory and civilization.
I would opt to be the last person alive if I could somehow start humanity anew.
If I was to be alive and completely forgotten, well, one could rectify that. My past is not important at the moment.
So, it really depends. If I were to die and be forgotten completely, well, that would be a waste. However, I wouldn't be around to know.
Either way, everything, and everyone, is forgotten and left to rot one day. What matters is how long they exist in human memory.