maybe it's trendy, but it's a great trend! good beer is good, making your own is fun, I prefer to cook my own hamburgers, why not make my own beer!
I started in highschool because you could buy all the stuff on order, early internet sites, like circa 2000. obviously we couldn't buy beer but even more obvious was that we wanted to drink it! Of course there wasn't much online literature and advice, and we mostly just winged it and tried alotta goofy shit, like banana nut ale or bumbleberry pie wheat and had like very little experience in good beer to begin with. sometimes it turned out shit awful like wtf were we thinking, but the generic recipes were usually good. Even back then, not even 20 years ago, there wasn't much great beer around anyway - people who drank "good" beer just had the generic imports, beck or guiness or whatever and some micros were juuuust popping up locally (in NH it was magic hat, long trail and harpoon, with sam adams and Saranac as the macromicros)
my friend I brewed with has continued ever since and one of my favorite parts of visiting the old NH home is after we get the kiddos asleep, sharing a homebrew from his keg in the basement and stirring up a new batch. the smells of malt and hops, it's one of the most comfortable happy places in my life
but for me, I wound up converting my brew bucket into a diaper pail and giving it up totally. I did brew some mead in college that was great for large volume cheap buzz and later some sake that was a very fun process and rewarding product