Looks like I found where the freaks are hanging out.
I'll throw in my two bits:
I got my ears pierced twice in the left and once in the right as well as my septum a few years before I got married. Been married almost 10 years now. Pierced my septum myself with the biggest sewing needle I could find. I would highly recommend paying a professional to do it - I pierced it straight, but it was definitely a bit much "discomfort" to inflict upon myself AND I found out after the fact that there's a great danger of paralyzing your face if you do it wrong.
I currently have 0 gauge tunnels in my ears (one in each side) and a 2 gauge tunnel in my septum. Since stretching to 2g, I don't usually wear a ring in my nose because 2 gauge septum rings tend to make old ladies glare disapprovingly and mothers with small children cross to the other side of the street. My hair is about half a foot past my shoulders and I have a fiery red beard about 5 inches at the longest part. I haven't really gotten any flack from homophobic dudes, probably in part because I'm a trim 240 lbs and look like a Viking berserker. About 6 years ago I was doing social work and dealing with the public a lot, and our assistant director told me to take my nose ring out (10 gauge at the time), but the executive director told me to leave it in. That was about the only "trouble" I've ever had with it.
As for the age at which I think earrings are appropriate for males, I don't think I would let my four year old son get his pierced. I think he should at least have a firm understanding of the social stigma he'd be facing before he did, and I think one would need to be at least mid-teens to make a really educated decision. I've seen parents pierce their boys' ears when their age was still in the single digits, and that's their choice - I just think that given established social norms the kid is more likely to face gender identity issues before he's psychologically developed enough to face them.
This concludes my two bits.