Does anyone regret it?

[Carnation]

As a homeschool parent, yes we are having our children go this route.
Probably not for an entire degree but definitely for AA.
One reason is that dh and I didn't complete our degree because we were frustrated that we weren't learning anything new in the general education courses... so we quit.
Our children also hate repetition so we will avoid that altogether and have our kids test after completing their high school courses.
Another reason is that our oldest tested into college level courses at 6-1/2 yo.
We had a letter that would have allowed us to register him in any college of our choice at 7yo.
We are not in any hurry to send him to college, instead letting him be a kid by playing with Legos, going camping with the scouts, and playing sports.
At 10yo he has started to test out of college classes and by 14yo he will be more mature and ready to sit in a classroom.

Testing out isn't the best option for everyone, nor is everyone able to handle it.
For some though, it is the best available option.