If you like to ride for relaxation and/or exercise you will do well to have your own bike. It helps to have a quality bike well fitted to you. But for getting place to place around a town where you will leave your bike for significant periods of time, a good bike share program is great. I am a charter member of DC's and always choose a bike share rather than my own if I am going somewhere within 30 minutes in town. I even take them to Georgetown (which may exceed the 30 minute free limit in traffic) and check it in and out at a mid-way stop to keep the trip free. Most of the programs are supported by Spotcycle's free smartphone app that shows the locations and dock status (number of bikes and empty slots).