Frat PARTIES!???

Am I doing the right thing? Im underage but living away from home at college (but thats not the question) what im asking is am I doing the right thing about partying? like u know clic frat house parties - beer pong and girls dressed up like s*uts...I dont party at all cause I told my mom I wouldnt...but It just seems like everyone I know parties- even the ones that I thought were really "good girl" like 5 min ago a girl who I never thought would drink was saying how hungover she was at breakfast...(bear with me here - i know im getting kinda wordy) but It would be just too easy to go and flirt and try some beer or whatever like I know people i could go with so i dont get d or something horrible.....but what im getting at is it just seems like so much fun and relatively harmless and the only reason im not going week after week is so my mom still trusts me........i wouldnt go wild or have with random guys or anything it just seems so harmless.........ADVICE PLEASE thank you :D