I already feel guilty about spending that much on myself instead of my children… But I figure if I can quit smoking which is the ultimate goal, hopefully I'll have more money in the long run and be healthier
BUT!
You're spending it on your kids since, as long as you have the will, you WILL become an ex-smoker. That will give your kids more time with you
And good hardware will last quite some time. Sure, you'll still need to buy juice (or make your own) and coils (or go rebuildable), but once you have your hardware and backups, that cost goes way down.
And welcome to ECF!