I snickered at the thought until I realized 90% of "successful" songs have cowriters. I've tried to write with others a few times, but never found someone that fits. Different ears and goals and stuff. And, yes, David, that is an interesting tendency, to bristle at suggestions. I know I do.
I get it....
I've co-written with just a couple of old band mates long ago but they asked for my input.
As it was...they'd agreed with my suggestions.
I'm not interested in co-writing for the very reasons you state above.
My music is not that complicated but I'm
extremely particular about song subject, lyrics and lyrical phrasing.
(If I could just sing up to my satisfaction that would be cool)
I'll spend consecutive days making sure each line meets my satisfaction and avoiding vapid cliches.
So...co-writing, as a rule, would not work for me.
I should qualify that my songs and above approach to song writing has kept me a poor, common man and unknown song writing entity.
Carry on....a good weekend to all.