I don't think wanting the team I support to win makes me a hero.
Us winning it and Wenger leaving are not mutually exclusive. The first may happen, the second definitely will at some point.
IF us winning it was somehow the key to Wenger having eternal life and being our manager in perpetuity then there would be an argument here but it isn't and he won't be.
So, for now, let's try and rescue something from what has been a poor season.