I use primes because (generally!)
(i) They're smaller and less heavy (1st most important)
(ii) The image quality is better
(iii) They are faster (low light)
(iv) They are faster (DOF)
(v) They are faster (brighter viewfinder) (2nd most important to me)
(vi) I consider perspective (often goes by the way side when I use a zoom and only framing is considered)
You will notice that the 2 main reason I use primes relates to enjoyment of use!
A bit about perspective
Assuming you've already decided or your framing the focal length controls perspective.
If you have a set of primes you select the right lens. If you have a zoom. you zoom to the right FL. Both achieve the same thing. However primes help me remember its an important aspect to consider
Does it take more skill to shoot with Primes?
No. But your running and lens changing skills may improve


