I have had co-founders to my businesses and I’ve done businesses solo. Solo always works better. Pretty much anyone who wants a technical co-founder is someone who won’t pull their weight.
Plus you lose half your equity right off the bat and you are dependent on someone and you aren’t really sure what they’re going to do for you.
VCs and investors are the only ones who like co-founders because then they can fire one of you that will later on if you’re not doing what they want.
The only other exception to this would be a married couple.