For me, it's a no-brainer, but I don't think that's the case for everyone. WordPress will be easier for most people out of the box, so that might be a better solution for many, but the tight integration with the Community is important to me. I'm utilizing the sidebar in articles to showcase recent activity and clubs, I am able to craft a homepage that ties the whole site together, amongst other things. IPS has some room for improvement in terms of showcasing articles though. I wasn't a fan of the default layouts for articles so I purchased templates (plugins) to figure out how to give them the look you would expect from a publisher. I had to do the same to create custom blocks that would also showcase content professionally on the homepage.
In the end, I'm very happy I made the switch. It required a bit of extra work to get the functionality and look out of it that I wanted, but it looks good now and has shown that ranking content won't be an issue, which was a concern of mine. I do think IPS does taxonomy better than WordPress as well.