I don’t think you need a good reason to homeschool. It’s just a choice, as is sending to public school or private school. There are benefits and drawbacks to any choice. You weigh those for your child and family and go with what you believe to be the best option.
I think the benefits and drawbacks vary by individual and family.
I began homeschooling just to better meet the needs of an atypical/special needs learner. I was a public school teacher when we made the choice, and I knew he’d get a better education at home.
I think, so far, both my kids are getting superior educations. You just can’t hardly beat one on one teaching and individualized instruction. I’ll give one example, though we are way past this now. In our former school system phonics instruction was whole word (not learning sounds/blending). This will swing back toward phonics as some point if it hasn’t already. But I saw a lot of older kids with horrible spelling as a result. I loved teaching my kids to read in the way that I felt best for each of them.
I could say the same thing about math and many other subjects.
It’s really nice to be able to let your kids get enough sleep without early morning school schedules. Kind of similarly, vacations when everyone’s in school are great!
My kids have had a lot of time to just play, enjoy each other, pursue hobbies/interests etc.
Socially is trickier. I think there are pluses and minuses in that area, depending on the child and community (homeschool, school, extracurricular–the whole thing). For one of mine, I’ve not doubt the plus outweighs the minus socially. The other I think is better off socially homeschooling too, but I’m not 100% confident this will remain true as we approach high school with him. We’ll see.
Depending on the homeschool parent’s sociability and community/homeschool options, it could be hard to meet the social needs of a social butterfly. School can still have it’s social drawbacks for those kids too, but taking the child’s personality into account is important.
Finally, no decision is permanent. We all just make the best choices we can and adjust as we go along.