Because it's challenging as heck and I love to torture myself.
No really, that is why. Because there's a bigger payoff when I finally get something right.
I learned Spanish in school, as well as a little bit of French and German. Those all came very easily and I've retained a lot of the Spanish even though I never use it. (The French and German have been lost.) There's a much bigger learning curve with Irish, and for that reason, it's more of an achievement to learn it.
And the other reason? It's because of you people. You're all contagious. I started coming to irishgaelictranslator.com for small random translations. I'd get what I needed and thank you and go on my way. At one point, one of you said, "Oh, and by the way, this is how you pronounce it" and wrote it out phonetically (don't remember who... I'd search up the thread and call you out but I'm afraid I'll get a virus! lol). I started saying it around the house because it sounded cool. My 3-year-old picked it up and started saying it himself. In the middle of the night. In perfect context. When he was half asleep. All on his own. I thought wow, how amazing would it be to learn a new language? My kids could learn with me, we could do it as a family!
I found myself reading other threads just to be reading them. Clicking links to help with pronunciation, articles you all would post.
And the more I learned, the more I realized how beautiful it is.