someone said don't instruct unless you want to be an instructor. I don't think I grew up dreaming of being a flight instructor, it was a step towards being an airline pilot.
but to be sure, you do have a responsibility to your student to make sure you are teaching him to be a safe pilot.
I would ignore the comment about ''don't instruct unless you want to be an instructor". But do a good job while instructing whatever your reason is.
when I instructed , decades ago, I charged 20 dollars an hour and threw in the ground for free. (ground instruction). I was poor all the time, but had saved money up for survival during this time. I made the 1500 hours needed to be an atp and then moved on.
but I was a good instructor as all of my students are still alive and well and not involved in any crackups. Some are flying for major airlines now and we are still in touch.