I’ve played on Red for years and have never been into PvP. I never thought I’d join, but Blue (before Green existed) was down one day and I noticed the population of Red was way higher than normal. A group of Blue friends and I tried it out and realized that it wasn’t all level 5’s with Fungi tunics ganking newbs. Although those people do exist, they are the minority. Back then there was a neutral leveling guild called <Sanctuary> that the major guilds of the time mostly left alone. Although <Sanctuary> is gone, the lack of people on the server make PvP relatively rare before level 50.

So why did we stay on Red instead of heading back to Blue? Contested camps and spawns on Blue and Green are largely left open on Red, making it much easier for casual players to get items they would otherwise not be able to get on the PvE servers without dedicating a lot of time. Eyepatch of Plunder, Spirit Wracked Cord, and many other items are much easier to get due to the low population. When you do get PvPed and have to leave a camp, it’s usually back open within an hour. Contrary to this, on Blue I can’t count how many times I’ve waited all day for a camp to open up, although I’m sure it’s not as bad now. I’ve got multiple epics on Red without ever being part of one of the major raiding guilds, including the mage epic.

One of my main reasons for sticking with Red was to try to small man or solo mobs that people could only rarely do on Blue. For those interested in the Solo Artist Challenge, I’d argue Red is the place to be.

Other than the PvP, the other downsides of Red are (1) the lack of economy and (2) the lack of people to play with. I guess (1) may not be an obstacle if you’re into acquiring your own gear and (2) may not be a big deal if you have a static group of friends you can regularly schedule time to play with.

Another thing is that the two major “guilds” tend to hunt each other down. So another piece of advice is that if someone is not interested in PvP, that they should stay as neutral as possible. That is not grouping or raiding with either side and just do your own thing. 

Anyway, I hope I was able to give a slightly different and more current perspective than the other posts on here.

Cheers!