Usually you want them balanced. If you aren’t somebody who wants to act normally, don’t have them balanced. If you could still get new tires for $30 each, you could just say no. I had a Ford Tempo which I didn’t respect and an 87 pickup truck and never balanced the 14 months worth of tires I bought. OK the truck tires lasted three years. I had no problems “that I knew of”. I mean the vehicles had no problems.
Now that I’m spending a lot more for tires, I have them balanced every time and buy the lifetime rotation/balance plan. I sleep a little better now.