When you start Skyrim again using a different race/character, is it like a whole new Skyrim experience or is it just the same so to speak? I realise you still have the main story line but wondered about the variety of gaming experience by changing races. Thankyou.

I'm afraid the gameworld and all of the NPC and quests react the same to the PC no matter the race.

Yep. This is why I make specialist characters who only do 1 questline (if they even bother with questlines). At least this way new characters feel different.

It's still pretty much the same. You might get some dialogue changes depending on your race.

Exactly this. ^^^

Specialization of a character pending their personality profile greatly enhances the gameplay experience and replay value.

Thanks guys that's enough to make me want to play for years. In theory quests never end do they because the game constantly creates then. Am I right thinking this

That was the theory behind the Radiant Quest mechanic. Alas, they are limited within themselves to a cap of 10 quests, as they revert to revolving those same 10.

That is the quests of a given questline. ie... Dark Brotherhood, Companions, Thieves' Guild, Blades.. etc.