Grew up about an hour and a half north east of there, in the heart of the real upstate NY snowbelt. Spent a lot of time in and around the Finger Lakes area.
As mentioned the summer's are beautiful. Winter's are typical of north eastern US. Snowfall isn't anything like the lake effect pummeling that Buffalo-Rochester-Syracuse seem to get once or so a year. Lake Ontario is rich with history and recreation. I could sit at the locks in Lockport for hours and hours with a cooler, reading, watching the boats, chilling (before kids, that is). The Catskills and Adirondacks are gorgeous, Niagara Falls is awesome, NYC is a few hours away (but a sucky drive). Canton isn't far, you're 90 mins from an NFL stadium. An hour from Watkins Glen race course (way better than most NASCAR tracks (IMO).The Finger Lakes are awesome for recreation. LOTS of wineries. An hour or so from some great hunting in southern NY/Northern PA.
I could go on, but you get the jist.
One thing that I hate about NY though, is the taxes.