Why do people nag me for not going out with friends this three day weekend? I’ve been there for four weekends already? ?

I unfortunately have school work I need to finish, but my coworker nagged that I should go to my best friends house and spend time with her this weekend. I’ve spent FOUR weekends in a row with my bestie already! FOUR! Besides education goes first. My dad was like, “You’re going to spend time with your friends this weekend?”
I told him I’ll see them next weekend and we planned next weekend. My dad said, “I understand you have work and your classes but there’s more to life than work and school. Get out of the house. You can still fit friend time this weekend. It’s a three day weekend.”
I just want to be at home or be with the family if there’s things going on. I have multiple tests to take that are due Sunday so I want to at least take some at a time. I love my friends, but I had a draining work week so I just want to chill but I have work I have to do. I’ll see them NEXT weekend. Plus we didn’t plan anything for this weekend. They asked if I’m coming over this weekend just now. I told them I’ll try. had They didn’t ask if I was busy. I don’t do that anymore. They just assume I’m coming over every weekend. I can’t be there every weekend. They understand education is very important. I get questions for wanting to stay home but not the others.

Updates
10 mo
I forgot to mention that I am a university student.
Why do people nag me for not going out with friends this three day weekend? I’ve been there for four weekends already? ?
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