Ask HN: Why would you use a cloud IDE?

This question is genuinely asked. Over the last few years various companies have started work on cloud IDEs, with admittedly impressive results in many cases. But personally, I've never been able to really identify a motivation for me to use one. Perhaps this is because I'm not very web-centric in terms of the code I write.

I feel like I must be missing something significant if people are putting a lot of effort in to something, so how do other people feel? Is the cloud IDE approach scratching a real itch, or is it being done because it can be? (My admittedly slightly pejorative initial reaction a few years back).