Well, I can give some insight into this. I was committed to homeschooling, active in local homeschooling groups, and getting all set up for kindergarten homeschool. To get ready, we practiced during the summer.
Then, right before kindergarten started, at the last possible moment, we decided to register our daughter at her request (all of the kids in the neighborhood go there). I figured she would hate it and want to pull out in a week anyway, and that would get the whole "I want to go to kindergarten" thing out of the way early on.
She loves it.
I do not love it -- I'm an unschooler at heart, and this school is so structured. I know I could do a better job, keep her closer to me, keep her healthier, safer, and so forth, and engage her in all kinds of great, creative projects where she learns something besides the rules.
But now, one month into school, she loves it more than ever. I have continued to sing the praises of homeschool, but she is not interested. I have not only her resistance, but my husband's resistance, since he does not want to make her stop doing something she enjoys so much. They do so much fun, interesting stuff geared towards five year old children. I'm still going to follow through with some of my hs'ing ideas and plans, but if I had it to do over again, I would never have allowed her to even read books about kindergarten, much less go there.
Right now my plan is to pull her out at first grade -- and to avoid letting my younger daughter go to K. I realize this sounds sort of radical, but I am still in a state of shock that after reading HS books and Gatto all summer long, I have a dd in a public school, which to me got to be evil incarnate.