It all depends on the group. If there is a good group then you can have such fun. I am not allergic to people, in fact I quite like most people. I think if you are in a group that you don't like, then you need a polite escape clause.
On my first two safaris, I was with strangers, but they were all nice, quiet people; I still correspond with some of them, years later. On subsequent safaris, my wife and I have encountered three couples whose behaviour spoiled things. Fortunately, we had to share a vehicle and walking with only one of those couples, and the others we were able to avoid most of the time. On a couple of other occasions, I've had brief encounters with children who had no place on safari. And it goes without saying that there's always a chance that we ourselves might not be to somebody else's liking.
Hence our efforts to travel with friends in recent years and keep camps to ourselves as much as possible. We've just spent the weekend with the four people who are going to South Africa and Zambia with us in July. Professionally we don't have much in common (one's a cop, another's an IT expert, and a third is a school principal) but we all have the same quiet, respectful attitude to wildlife. It's going to be fun.