I am currently home educating DS1 (12) who has ASD, more by necessity than by choice, as a temporary measure while we wait for a suitable school place. I haven't regretted it although I wouldn't have chosen to do it without trying school first.
Pros:
getting to spend more time with him ( especially relevant for a nearly teenager)
Understanding where his strengths and weaknesses are in a learning capacity
Being able to work as his pace and move on only when he's confident in what he's working on ( particularly in maths)
More scope for self led teaching eg he is teaching himself Japanese instead of French because 'French is boring' ( his words)
No school uniform
Can go to places during term time weekdays when they're not busy
No travel time or costs to get to school
Not being forced to socialise with other people as this is what stresses him out most. There are opportunities for socialisation through local homeschooling groups but he chooses not to do them.
Cons:
The time spent on preparing lessons and teaching
Cost ( both in lost earnings and in any additional tuition, sports equipment or costs which would normally be provided in PE, textbooks, stationary, computer software)
Being 12, I can leave him at home while I pop out, but with a younger child, I would find it very limiting, to always have to take a child along to any appointments for myself. Fine if you have family or other HE friends nearby who might babysit.
Diminishing social circle for him.
This year has opened my eyes to how many people do home educate, either permanently or transiently. I have looked on it as a challenge and actually quite enjoyed it. That said, I wouldn't choose to do it for my other children unless they were really struggling with school and there was no other option.
What is it you're not happy about with the UK schooling system? If not happy with the state system, would a private school suit you better, given that you can carry on working if you're not home educating?