I just finished the main quest, and the civil war...feeling a little let down about both of them (I killed ulfric with one punch, and "go to another dimension", kill bad guy felt a lot like oblivion's paradise nearend quest (actually...exactly the same). Not to mention the fact that I killed aldiun with 3 power attacks with my legendary ebony weapons.

Afterwards I head out and realize that everything is now a one hit kill for my level 35 redguard dual wielder with full legendary dragon scale armor. And try to procede with the companions. But near the end of the companions questline I get a bug and the next quest doesn't start because I already killed all the baddies in the dungeon they were planning to send me to. So can't finish the companions.

Now I've seen many people come on the forums in a similar situation and immediately complain about how bad skyrim is. But you know what...I know just what to do.

I'm going to start a new game.

Quite a revelation isn't it? Not having any more fun with my redgaurd? Well lets hang his jersey up and retire him, because it's argonian thief time. Get bored of him? High elf mage time, etc etc.
This game is going to be fun for a looooong time