The first MISTAKE about mesh many here seem to make when it comes to judging it is with regard to CLOTHING. Mesh is the absolutely worse possible "technology" to use for clothing. it's horrible as mesh demands the highest server resources, over and above sculpties and plain old prims.
If used in clothing, mesh should be an add-on compliment - not the whole fecking outfit.
I see mesh being used and only really useful for organic or "high-prim-cost" fluid or unusual shapes. For example: if I'm building a southern house, should I use mesh for the highly-detailed pillars? Hell no! Prims are less expensive (create in world, only L$10 to upload an optimized texture, counts as only ONE prim and easy on YOUR viewer).
The problem with mesh will be that 99% of all mesh on grid will be unnecessary, where sculpties and prims would do a *better* job.
This is why this entire thread is funny (in a good way) - Ceri: good that you experimented and found mesh to be utter shit for clothing. As an experienced 3D modeler for a few decades I could have told you that. But it always would have nagged you, calling to you like a siren on the rocks.
So it's good you took the plunge to learn for yourself. No the Mesh's Siren song won't be so enchanting to you in the future.