In oblivion i was a spell sword because i like magic and weapons alot. thank god that i don't need alchemy any more though. my point is though, i think i have to many specialies. I'm a nord that specializes in
-one handed
-destruction
-conjuration
-heavy armor
-sneak
-blocking
I just really like being able to dual wield, or sneak up and kill someone, or switch to magic, or summon something crazy all while being protected by some good armor. I seem to be leveling quickly and i"m afraid i mastered to many things to be able to unlock all the good perks.
That is the point, you are only supposed to specialize in a few of them, not all of them. Its great they give us so many so everyone can play totally differently and have a different experience.
If you want to use magic, just pick destruction or conjuration not both. Then once one tree is filled out to your liking you can start using the other..
Like the saying goes, jack of all trades but a master of none.