As a developer, SaaS all the way. I really really love not having to deal with versions, release branches galore, hotfixes on different releases and all that jazz. I'm so glad I could leave that behind and we have a single Cloud "version" i.e. whatever the latest commit on the main branch is. Sure we might be a few commits behind head in what's actually currently deployed to all the production envs but that's so much more manageable than thousands upon thousands of customers on different versions and with direct control over your database. We also have a non-SaaS version we still support and I'm so glad I don't have to deal with it any longer and someone else does. Very bad memories of customers telling you they didn't do something and when you get the logs/database excerpt (finally, after spending way too much times debugging and talking to them already) you can clearly see that they did fudge with the database ...
We have to differentiate a bit between consumer and enterprise environments a bit here. My comment was in regards to the latter, where other people's computers basically were under our full control.