Graduate study is a very different sort of animal. It's much less about having things thrust upon you, and much more about letting you investigate things that genuinely interest you.
And this is how I ultimately realized grad school was never going to happen for me. I enjoyed my CS classes, but there was nothing that really
grabbed me in a way that would make me spend extra time researching for its own sake (except maybe computer graphics). I found that I was happy coding during the day for a living, but in my spare time I wanted to do too many other things.
I had a half-assed notion of wanting to teach (which would require a graduate degree of some kind), but I kept finding reasons not to apply, and before I knew it I was in my late 40s and realized that if it hasn't happened by now, it ain't gonna happen.