This is an interesting discussion (and I am glad it has not been shut down). I don't raid very often. Personally, I mostly dislike them and they are a pain in the butt. Here are the reasons why:
1. Usually, you get people who learn them quickly and run them rote nearly flawlessly and those people do not really want people like me in their party. They want fast, near-flawless runs and do not want to have to teach anyone. This is fine as it is their prerogative and I do not begrudge them that - thus, I try to stay out of their parties as much as I can.
2. I do not have a lot of patience to sit around waiting for the group to fill and the fun to start. My patience is low enough that if I get a couple people hitting my lfm for a regular quest and have to wait more than about 2 or 3 minutes for more, then I am ready for everyone in the group to pop a hire and get down to the fun.
3. I do not particularly enjoy puzzles. I would rather have other people figure them out and then go learn from those people. I spend most of my day doing puzzles in the form of programming already. When I get on DDO, I want things that do not tax my brain in the same way, especially since most days I am already mentally tired.
So, with all that in mind, I would rather have good content that contains loot I want to get. If that content has a raid in it, I might eventually run it and I might even eventually run it enough to get the gear I want. However, if it does not have a raid, not only am I totally fine with that, but I would prefer not to have to run raids to get the gear I want. I have several characters that still need gear from VoN5 and VoN6, but I think I've only run that raid 6 times in almost 4 years of playing. I have run Shroud a bunch because I was able to get into a static group for a while. Never done Abbott (it scares the hell out of me that I'll screw up the run) or Titan (does anybody do this one?). Only run Tower of Despair about 6 or 8 times. I have only done Vision of Destruction once ever and that was because someone sent me a tell while I was on my bard and asked if I wanted to go. I figured 'why not?' and went - and it was soooooo frigging boring I would never do it again for any reason.