Bronies are cool with me as long as they stay to their corners of the internet. Now that the fad has passed where people aren't watching it because it's a trend I don't think I'll come across as many outside of maybe Youtube, and that's usually my fault for clicking on a MLP video.
I do like the G2 ponies though. I grew up on a local TV network that plays exactly what The Hub plays now, old cartoons from the 80s/early 90s, mostly feel-good girl cartoons. I'm not a girl, but those shows gave me the best feelings I've ever had watching TV as a kid. My mom's boyfriend's daughter and I would watch them every weekend together for hours.
I haven't tried watching any of those old shows or MLPFIM, but I can sympathize with why someone might adore those shows enough to dedicate themselves to them.