If I sus someone as wolf, I like to leave them as an ace in the hole. And watch how they behave to see if they unveil the other wolf.
Let’s play out you asking to be voted off:
1- We vote you D1. You were village and we wasted a vote
2- we vote a wolf or two off first couple of days and win game. You make it to end.
3- we don’t vote a wolf or two off and realize you may have actually been a wolf and vote you off D3 or D4
4- We vote you D1 and you were actually wolf. And you made a stupid move to ask to be voted off as a wolf.
I don’t think #4 is likely. I think #1 is a waste. I think #2 is unlikely. #3 seems most likely and I will play it out this way. I don’t see you making the end having made your statement. Too many villagers will get paranoid D4 to not remember this