I don't have problems having fun. During the week, I have fun walking my dog twice a day, biking to and from work, cooking/eating dinner, and usually meeting up with friends in the evening. Even things that aren't necessarily fun, like finishing my master's thesis, I make fun by working at my favorite coffee shop where I know tons of people. Chores in my 950 sqft apartment take negligible time each week and mostly happen on Sundays while enjoyably listening to music or podcasts.
I have trouble preventing myself from getting overwhelmed from all the fun things I have on my calendar - kickball, capture the flag, biking happy hours, dance events, birthday parties, floating at the beach, block parties, art festivals, cabin/camping weekends, live music, dog park visits, hiking. I seriously don't understand how people have time to watch movies or TV with all the fun things happening in the world.
However, I'm young and live in the city with a lot of friends. Plus, this is Minnesota and summer is like that. Bright, glorious, brimming with fun.