What are your thoughts about women who don't vote?

A couple of young female coworkers (one right leaning and one left leaning) don't vote, but tend to have strong opinions on certain issues. They both don't think its worth it. I will say I had parents who preached the value of voting even at an early age. Wouldn't women vote harder due to there being a time when they could not? Are there limitations having to due with the system? Both of them are white.