ATtiny25 and MQ2 Saving Lungs

Proud Hoosier. I grew up pretty poor and never got to play much with tech until I went to college. Since then, I've done a lot with tech like programming, building electronics and obviously my own systems. I'm getting into all the stuff I missed as a kid. Army Guard and Navy vet, law school grad with no license nor do I want one. 46 with no kids. Is that good or bad?