As someone who took three years off once to backpack, came back, and who is disillusioned again, I guess my one piece of advice is to not have kids while you're working in tech.
If you do, you immediately get used to the income, and then you get addicted. Not in a "high" sense, but you start expecting the best things for your kids. And then you're stuck for the next 20 years.
I'd say spend the first five years with kids in a lower-income role (assuming that's where you are now). Get used to that. Then if you're tempted by tech career again you can try it out and jump back out if you want.
If you do, you immediately get used to the income, and then you get addicted. Not in a "high" sense, but you start expecting the best things for your kids. And then you're stuck for the next 20 years.
I'd say spend the first five years with kids in a lower-income role (assuming that's where you are now). Get used to that. Then if you're tempted by tech career again you can try it out and jump back out if you want.