Personally I do not care what anyone thinks. Girly? Weak? Last time I checked spinning classes give you the opportunity to go as hard with as much resistance as you like. The only thing "weak" here is if you care so much about what other people would think of you that you let it affect the things you do.

I used to go 3 times a week during the most rainy months here. Yeah, yeah I know, real men ride in all types of wheather. I dont mind cold, personally just dont want to deal with rain unless its on my commute.