This niche has always been popular that is was about time some projects were cooking behind the scenes. As we all know many projects don't have a purpose, and they start ICOs only to hastily raise a capital for something they have not idea for.
Others fields like online dating are also making their first steps into the blockchain terrain. But some of them fall short. Like I said, when we want to take something into Blockchain, we need to have purpose... a solution for a problem, so to speak.
Blockchain technology can harbor many fields. There are projects currently developed by Disney for their thematic parks, and NASA is using blockchain as well.
So, I think that with online dating - since it is a topic with a large audience - a project based on this field can have a good future.
Source: https://sites.google.com/view/dateme-online-dating/home