I Started a little bit content writing on fiver then introduced to SEO. Then I started to learn and write about SEO and digital marketing and build my social profile and followers in this niche. So SEO is my favourite niche, this really helped me to earn some money from online while I was studying in college.
There are so many reasons other people also to like this niche. In fact, anyone who started with blogging, and online income things might have tried or at least introduced with this niche.

Now I think I should move on to blockchain and cryptos :)lol
thank you!