Do you want to play a newer (when compared to your existing experience.) elder scrolls game? If yes, then play.
Oblivion and skyrim are not really alike. Skyrim "streamlined" a lot of character stuff, and you can't buff individual aspects anymore. No more moon jumping, no more running around like sonic... in favour of focusing on the combat and crafting skills.
Is it a beautiful game? Yup: great vistas, great map, great effects (more so when compared to older entries like oblivion.). Combat is fairly fast, fluid, and there's great stories weaved into the world.
It's not oblivion though.
If skyrim doesn't satisfy: you could always get the oblivion remaster.