Cloud is just another word for someone else controls your data/stuff, and they don't care
Show me a serious use case for needing to do X in your home from half a world away, and I'll believe there's a reason for it to be on the Internet. 'Course, its security will still be crap ;-)
When I bought my home many years ago, 'twas the first time I'd had a garage door with a remote opener. For yucks, one day I wandered the neighborhood clicking the clicker, and discovered several owners of compatible openers who, like the previous owner of my house, had never changed the default switch settings on their remote openers. It was fun running their doors up and down, but I went home and changed my switch settings right away. Still not really secure, of course, but less miserably INsecure.