Gas is not an issue for me because I work for a car rental company and never have to fill up (go ahead and be envious)
but due to time constraints and a three year old I still find myself riding out of the garage on the bike instead of loading up the car. I live right next to a state park that is rather nice ride with rolling hills and no traffic, but even though the scenery is great the same ride can get a bit old. I always find myself thinking about heading out to a different spot, but I usually give in to the easier choice and just head out to the park. I guess it's just something about loading all the gear or maybe the sweaty ride in the car back to the house. I still do a few group rides each week, but sometimes I think that I'm becoming a little lazy.