At today's car prices, it's actually cheaper for some people to use a rideshare every day. Especially when you factor in the cost of gas, maintenance, insurance,and parking. My friend drove for Uber and had a regular daily commuter, a nurse who worked in Houston's medical center where parking is around $30/day. We have no good mass transit options so Uber was the best choice.
Sadly it's dependent on the area, my current area rideshare situation is so bad that it can take you almost an hour to get a driver who won't cancel your trip because they deem that your trip is not profitable enough. The system's fucked so you're pushed to get a car so you can have mobility. This is doubly so when you've started having children.