I miss the days I had my "#1 Fan" as an artistic sounding board/partner. Sometimes two heads are better than one, finding out what ideas won't work and why. Another pair of eyes to see something in a different way. (Sadly she doesn't do this anymore. Survival is her first priority, and no one else "understands" my art/creations like she does or I do. )
I think working with other people is the most important part of any persons working life. It's taken me too many years of trying to do "everything" to finally realise that I should focus on something that I do well, and find others to collaborate/work with. For years I'd never really gotten anywhere, trying to write stories, draw, animate, make comics, paint, go back to the drawing board again, and the list goes on.
On the flip side, don't try working with unreliable people! No matter how much they promise they'll change, they won't in my experience. I would rather work alone, than be let down. At least then you only have yourself to blame and improve if things don't go according to plan.
I would agree with this because it has happened to me too! But I still want to work with people, even if that means getting let down every once in a while. Plus I find that I enjoy working with others and I love playing ideas off them. Sometimes crazy stuff happens!