Why would I charge for my side projects? I make more than enough money to support my family from my day job. And my side projects are labors of love, not a way

Why would I charge for my side projects? I make more than enough money to support my family from my day job. And my side projects are labors of love, not a way to get more money. Not to mention that by not charging for it, it increases the audience for the project, and knowing that other people find it useful is its own reward.