mine is salt n pepper now basically...but i'll be 45 this year.
Im around your age, and as bo said, my beard does make me look older haha. Coincidentally i just shaved face clean a day or two ago...which I only do maybe 3 times a year. Without the facial hair I can pass for a youthful 43, probably!!
I typically use the electric to trim things up and make me look less "I live under a bridge". Strictly for the wife's sake since I like my beard...longer and and salt-and-pepperier the better!