"I insisted on a primer but the contractor said that was not necessary since the paint he bought was high grade and had a primer."

Ugh, skipping steps is catamount to a mess typically.

I would enjoy them as long as you can, and just not worry about them, knowing that the finish probably wont last all that long. Be prepared for the worst, and if the best happens, then you can enjoy them longer. There isnt much you can do right now anyway, unless you spend a lot more money, so may as well enjoy them. Also remember that the paint may feel dry to you now, but, it takes many days for cabinet paint to cure, to get to its hardness, so please do be a bit careful, for at least the next 30 days.

Here are some photos. The blue looks different in one but it’s just the lighting.

No professional cabinet finisher did that work. You can do better, DIY. Join the Kitchen Cabinet Painting Experts group on Facebook to see the steps you need to take.

Oh my. I think I take back what I said before. Those cabinets are cabinets I could never live with at all. Sloppy paint job, can tell, that none or very little sanding was done. Wonder if he even cleaned them, before slopping on the paint. Yes, I agree, you could do a better DIY job yourself. It takes a lot of time, but, will save you a lot of money. Prep is the most important thing, and obviously yours had very little if any prep.