I almost had a stroke last year because i got so anxious while stuttering that i was sweating waterfalls and hyperventilating, i collapsed and had to be moved to the infirmary. It’s not the stuttering that is bad, but the fact that it came with a package full of diffrent bullshit like social anxiety, depression, humiliation, low self-esteem… etc. It doesn’t matter if you look good, knowledgeable, kind, funny. It will always be an instant turn off for most ppl if you can’t even talk properly and hold long conversation.