Ok, but even then... why not something more positive like:
"I did my best, and that's what counts."
Which still doesn't sound like a site slogan, and still sounds weird with no context. How about something that better sells the the philosophy of the site, like:
"Real sportsmanship, real friends, real competitive Pokemon."
Something that's catchy, positive, and also builds a mantra/philosophy. "I have no regrets" just sounds like you're throwing up your hands-- or something. Even if you're selling the values, there has definitely got to be something to better speak the values. To me, the current slogan sounds too much like angst about the chip on the shoulder, instead of one that sells the vision for the future. Just my insights, take it or leave it.
One thing it does do is advertise to us veteran Smogoners "THIS IS THE COMMUNITY SYNRE AND CO MADE, COME CHECK IT OUT" because it's from his LoA post. That definitely encouraged ME to click on it to find out about how it's going / how you guys are doing. However, I don't think I (and others in the same category) are the audience you guys want to pull in with your advertisement, so maybe that's not such a big benefit. The site does look great though. :)
alternatively:
"Competitive Pokemon off the internet, let's make it happen!" (jk ;) )