I love restaurants & bars w/ outdoor seating - as long as the outdoor seating area is nice & isn't just tables on a patio w/ nothing interesting going on. For me, it's all about the atmosphere.
I especially love outdoor seating w/ a water view. Live music is also a plus. I need adequate shade too during the day.
We have a local taco restaurant w/ both indoor & outdoor seating. The outdoor seating consists of just tables under a roof next to the parking lot. The indoor seating is much more interesting & lively. However, if the weather is nice, we'll sit wherever a table is first available.
By contrast, there's another local restaurant that's at a marina, & I'd much prefer to sit outside than I would inside.