It depends. Big epic sci fi pic, or just want to get out of the house for a date night, we go to the movies. Especially this lux chain near us called Cineopolis. It costs about double, but you get a reclining leather burka lounger, you get to pick your exact seat online, and waiters come to your seat to get your popcorn order. Plus they have alcohol 
. When we lived in SF there was a similar theater owned by Sundance in Japantown called the Kabuki Theater. These are complete movie experiences, not just a big screen and a dozen surround sound speakers. No sticky floors, no stale popcorn smell, and with the high price, not usually any kids. You should see if there is something similar in your area. Ironically, the first time I ever went to a theater like this was in Taiwan about 1o years ago. Seems to be catching on here now.
For home, typically we will watch a bunch of rom-coms, buddy movies, some less epic sci fi… Things were the big experience is less important and we might just want to curl up on the couch with a beverage, the fire going, and the dog.
Frequency wise we watch about 3 movies per week at home, mainly streaming through Netflix, crackle, or iTunes. We go to the movies about once a month maybe. Depending on what is out. Just saw Oblivion last weekend. Was worth it to see in the movies.