Modding can be difficult and frustrating, especially with very complex mods like FCOM for Oblivion. In any case, though, it's basically a hobby activity and there's nothing wrong with doing it, as long as you think the results would be worth the time that might be spent doing troubleshooting. The more time you spend troubleshooting, though, the more you learn about how the system works and the less time you need to spend doing so in the future. For instance, if you get some experience with troubleshooting CTDs you start to get some ideas about likely causes and you can deal with issues like those much more quickly. There are similar principles at work with doing things like programming and learning the ins and outs of Linux, incidentally. If you don't mind some troubleshooting, you can really get into activities like these. If you reach this level of proficiency with modding, you can easily modify your mods or make your own. Why would you want to do this? Quite simply, it gives you a greater level of control and power over your Skyrim game. You don't need to play the game in a way that someone else tells you you should. You don't even need to use a mod exactly as the modder intended. There aren't really consequences to making your own personal (not uploaded anywhere) modifications to mods. This means your game can be highly customized according to what you want out of it. Does a mod add item A to the game and you don't want it? You can remove it and any references to it. Does a mod modify NPC B when you don't want it to do that? You can remove that reference from the mod. Fundamentally, you get to play as you want within the limitations of the game engine. That's a very empowering thing and can make it take much longer for a game to lose its fun factor.
