These things are true at once:
- Good work inkscape developers! Inkscape is used by lots of people. I'm happy for the developers and the users, and I hope inkscape keeps getting better.
- I don't want to use inkscape because when I tried it, it seemed ugly, slow and buggy.
The only problem here is when people equate "this program is junk" with "this person is junk". That's a very dangerous belief to have, because it makes an enemy out of practice. And an enemy out of experimentation. The road to expertise is paved by mistakes. If bad quality work makes you a bad person, you can never learn a new skill.