We can all understand attachment to a character, but to get to 30 levels in a short time is even easier thanks to the duty roulette. And you should really only pay to keep your character if you're reached end game content.

I would honestly suggest just trying a fresh character on a different server... You get to completely change your looks and starting class!

But as for suggesting which server? Everyone's only going to suggest the server they're currently on. You should only really take into account where your friends are.
If you have none playing? Then look into different free companies and server populations before making a judgement on where you'd like to be.
After all that, if you still want to keep your character, we can't stop you. Though none of us would suggest it.