Should I use my invisibility to fight crime or for evil?

I’m just invisible, I went to buy coffee today and was flabbergasted when the barista looked at me. Cause I haven’t been looked at in so long.

I was crossing the road and it was a pedestrian light thingy. 2-3 cars just drove anyway. I walk in crowded areas I don’t get looked at once, not even where it’d be basic human reaction too. Can’t remember last time someone remembered my name.

So since I’m just invisible, how should I use my abilities? Torn between fighting crime or for evil? But I feel like even if I save someone’s life they’d be like; “who was that again”.