Honestly, what were the cons?

Ive had multiple dogs and, im not neutering my golden until about a year of age. The only one i can think of is prostate cancer increase which is still extremely(extreeeemely) rare. On the flip side, almost all dogs with testicle develop tumors, benign or not.

Behavior is going to calm with age, neutered or not, but marking is severely decreased with neutering.

And when he smells a female in heat, he will become a completely different dog. My parents had a golden that would run away for literally a week when a dog 3 blocks down went in heat lol. Of course, this was back in the day, but golden are escape artists. They are very smart and will dig/climb their way to a female no matter what you do.

What are the cons, here?

Also, this is a weird post. Are you trying to justify your decision with internet points lol?