Is getting a law degree like owning a pickup truck?

When I owned a pickup truck I was asked to help folks move a lot. I am wondering if it will be the same if I become a Lawyer.(I am applying for Law School) I am wondering if Lawyers, like Doctors, also are called into service by family and friends and if it affects their relationships.

I am not at all adverse to helping- in fact my goal in Law is to help people. I would just like to know how it might affect my relationships with family and friends.

Many thanks!