There are quite a few casual users, actually under a wide range of communities, it just doesn’t appear that way from the shitty trending page. There are musicians, gamers, homesteaders, science folks… you name it, I can probably find you at least one of them.
It’s actually the easiest way that I’m aware of to accumulate crypto for free and participate in a growing community.
The other thing to keep in mind is that the website is only a single application of the steem token. There are many cool projects being built on the platform, and the end goal is to attract a wide range of people and build out a whole social ecosystem around the platform.
Of course, I’m biased being a member of the community myself, but that’s how I started and I’ve been on the platform for a good 10 months now. If you want to know more feel free to ask me in DM or on the subreddit, etc…