What's my favorite part about camping? Usually, it's the people that I get to go out camping with. Sometimes, it's squirrels. Either way, I always make sure that I bring a 2 person tent when I go out on a little hiking adventure.
With a 2 man tent, and a camping partner, it is usually lighter for us to split the gear in half and each carry part of the tent in our packs. That way, you only need to bring one tent instead of two. That's sort of a pro tip I picked up from some dude in his mid-fifties that stole my campground one night. He said If we'd let him camp there, he good us some good tips. He also suggested that you should always hike with a honey jar so that you can feed the bears. True story. Smart guy.
Personally, I need a ton of space when I sleep. I like to roll around and stretch my legs out. I think it comes from my dreams about wanting to be a pro skier and going all heli spread eagle down the mogul run. Either way, I always like the extra space that I get when I camp in a 2 person tent.