I found they go over much better when you call them "Compression Pants" instead of tights.  LOL

I live in Michigan and do not wear them.  I wear Mizuno running pants and usually stay plenty warm in them but if this wind keeps up, I may reconsider switching over!  I don't see any problem with guys wearing them unless they purposely picked out pants that are waaaay too tight!  No one wants to see your junk! or your junk spilling out of the trunk! 

A couple of comments...first of all...my general rule is, tights when the temperature is below 48 degrees F...if it's right around that mark then it gets a bit tricky. In the rain I wear some loose fitting pants that won't bunch up at the knee. Above 48 I go with shorts. Below 21 degrees F, sweats are mandatory.

Second of all, tights are first of all performance wear. As a fashion statement they are way down on the list. I wear tights because I'm concerned about how I run, not what I look like. Frankly, if I'm racing or doing roadwork my concerns are how fast I'm going and can I pass the person in front of me. If my backside or frontside is sticking out, that's not something I care about. I wear whatever works and allows me to run the best I can.

In the past 10 years the best pair of tights I had were a silver pair that, I think, Reebok had been testing but that never made it to market. By the time I wore them out they were practically threadbare everywhere...but I pulled in some amazing splits wearing them.

Well, being from the west coast, southern california, I just never needed running tights.  However, you do see guys in tights (and gloves) running around here.  I'm not sure why.  I use to do ocean swims too.  Back then we never wore wet-suits of any kind.  We just wore speedo's.  I went to a college in the mid-west (wisconsin) and ran cross country.  It was there I experienced first time wearing tights.  I didn't mind them.  It was freakin cold there plus all the "good runners" wore them so that made it okay.  I think I remember thinking I looked sexy in them lol, or was it I felt sexy?  Anyway, as the season got colder, I also wore shorts, tights, and sweats, the heavy duty kind.  A time or two I even wore these thick socks and plastic baggies over the socks to help keep my feet dry from snow and slush.  Then there was the head gear lol...  Yup, I thinks it's okay for runners, guys, to wear tights.

When I'm not running, I'm playing rugby.  Part of our year-round gear is compression shorts.  At least part of the idea behind it is that it helps keep the upper leg muscles warm, increasing performance and reducing recovery time.  Have any of you who wear compression gear to run found this to be true?

Below 48 degrees! I must be "hot natured". I would burn up if I covered my legs before it got down into the 30s and I don't usually even think about covering them until it hits the 20s. I wear shorts and a t-shirt, no hat, no gloves anywhere in the 40s.

On the issue of the compression tights. Just as I don't wear weight belts when lifting weights because I believe the belt makes you weaker (just progress more slowly in your lifts and build a "natural" weight belt), I wouldn't use compression tights as a performance enhancer for most of my training. i might use them to help push the training to a higher level after I have built a substantial base. I would use them for very long races if the weather allowed. And if it were below 30 and raining, sleeting or snowing I would use tights to keep warm on a long run. Just because of the crowd I grew up around, I'd wear shorts over them.

In temps are below 30 then I'll wear tights in a marathon.  They are especially helpful if it is windy.  I always wear shorts on top though.  One huge advantage is that I don't have to worry about inner thigh chaffing.

I train for Triathlon and I wear Bike shorts which are tights... Many swimmers use swim jammers which are tights. I see nothing wrong with running in tights.

All Triathlon clothing is tight.

There's nothing wrong with it.

Maybe it's time to bring the cod-piece back into fashion!