My suburb has solid light rail to the city but a poor bus system to complement it. My closest bus doesn't run at all on weekends. There is a huge park and ride lot but, since I'm already in my car driving towards my destination, it always ends up being a question of whether I want to deal with a rail ride that might be equivalent to driving inbound but will be at least 30 minutes longer on the return. The deciding factor tends to come down to parking costs in the city or whether I plan to drink and need the long return ride to sober up.