It would be unfair to say NO. We all are products of volunteering, from our homes, families, social gatherings...
Do you know offering a seat to guests at a gathering is volunteering? Many offered their services to get a duster for blackboards, so many day to day examples. These examples gave way to nicknames when growing.
Transpose this to Volunteerism!!
From such circumstances, friendships, partnerships, marriages, just to name a few.
Volunteerism is a huge gateway to succeeding in your career. Volunteerism, most without renumeration brings contacts, opens your mind to wider views, or even narrower ones.
One should take advantage of those to build up a career path.
Should it occur, that you volunteer in an organisation with a good stipend, your self abilities will show proof for your career development.