(Generally) You cannot apply the same pressure to a fountain pen that you can apply to a ballpoint pen - the tip would break (or bend away from the base that feeds the ink in). That's the 'lightness' people are refering to in other answers.
This means you will start to write 'less strained' automatically, with two potential benefits:
- You will have more time to think about what/how you write
- You can take more time to write neatly
So for creative writing a fountain pen would be an option, for jotting down quick notes during a meeting it may be less appropriate.
(Your question title says scribbling, but I'm answering for writing as well).
A good fountain pen will not leak, buy one at an office/book/stationary store where they actually let you try them. You want to feel the weight, balance, thickness, writing resistance, to determine which pen is for you. Since you don't mention where you are, it's hard to give specific (brand) recommendations.
And keep buying your supplies from the same store afterwards: a store that gives you this kind of service should stay in business.