I have a really bad sense of direction, so if I'm going to be driving in an unfamiliar area, I'll always street view the highway to see what it actually looks like where I need to take an exit, etc. Couldn't switch from Google Maps without street view.

I also use Street View quite a lot (Australian here). However, I use OpenStreetMap for everything else.

I don't actually access it from OpenStreetMap though, rather, I use it through http://open.mapquest.com in my browser, or OsmAnd+ on my phone (with offline data). You'll find that for th ehalf of the time you don't need street view, it is really easy to switch of Google maps.

I use Street View probably about as much as I use the Maps themselves. Any time I'm going somewhere, I'll map it, then Street View it, so I know what I'm looking for.

Street View is one of my favourite things Google has done in years, and I couldn't imagine life without it these days.

Sucks to live in Germany sometimes :(

Street level data is huge in terms of scoping out a neighborhood that you intend to live in