You should be thanking your sister for the support.
Because those bands don't deserve what you think they did for you. And they also suck and are not punk.
There alternative punk,
Alternative generally means "write music that does not sound like nor influenced of the genre we claim we play and then claim we play the genre we don't."
when did the "[band] saved my life" trend start? because when i was a kid nobody ever said this.
i blame it on nirvana in the early 90s...parents of the "me generation"(80s) had neglected/sad children who found catharsis within the loathing misanthropic lyrics and nirvanas popularity had them reach exponentially more kiddies than any angst/mal-adjusted band had hitherto