For me it was me looking up alternative social media platforms on Google, as I never had any liking towards the mainstream social media platforms in any way.
Then I chance upon this "Mastodon" and am intrigued by it.
I sign up for it....
I have been here 2 years and counting! :blobcatgiggle:
@frankie
I actually didn't use any of Facebook/Instagram or Twitter at all before coming here.
I might have heard of fedi via Reddit, I have interest in FOSS, decentralization and privacy, so it might have been from there.