When I was choosing what degree to do at university I didn't even consider computer science because I hadn't been exposed to computer science education before that so I didn't know what it was like and that I might be interested in it. I went to an all-girls school so it was probably assumed that girls would have no interest in it, in the same way that I wasn't offered courses in other typically male-oriented subjects like woodworking, mechanics etc. It wasn't until I took a computer science module as part of my business degree that I developed an interest in it and decided to do a masters in it.

So for me, the main reason I didn't study it at undergraduate level is that I simply wasn't exposed to it enough during my formative years to develop an interest in it, not through any perceived mathematical difficulty or that it is sometimes seen as a solitary activity.