We all had mumps as kids. Then they invented a vaccine so people don't get it as kids. That way in those rare circumstances were people get it they are frequently adults who it can really hurt.
I was exposed as a kid (around age 9) when it went around the elementary school I attended. I was actually sleeping in the same room as one of the kids who got it (my dad's girlfriend's youngest daughter; I lived there for two years before going to live with my grandparents).
I didn't get it. I also didn't get chicken pox, when it went around the school the following year.
What I did do, was to get mumps during my last year of high school, right around the time when I was frantically trying to get through my Grade 12 biology and chemistry courses, so I could get into the B.Ed. program in the local college.
Well, I ended up sick for 3 weeks, missed the final exams, had to repeat both my science courses, and yes, it HURT.
Try living on grape juice for 3 weeks. There wasn't much I could tolerate, and I remember trying to get up one morning to go to school (after a couple of weeks). I felt dizzy, but was determined to go.
My grandmother took one look at me as I was trying not to fall over, and told me to go back to bed.
Mumps was regarded as bad in the 80s, measles and chickenpox no big deal.
They had a measles outbreak in the islands recently and it was a big deal. Killed a heap of people and made it here.
Mumps us worse for females? I vaguely remember them being worried about my sister.
Fertility issues. Having mumps after puberty can completely mess up the menstrual cycle, particularly if there were problems before (ie. if the teen/young woman was dealing with hypothyroidism).
It doesn't mean she definitely wouldn't be able to have children (although it can be that bad), but it could be difficult.