Well, I was the least experienced one on my last trip out and I sent them ahead without me. It was really the only nice thing to do and I couldn't imagine forcing one of them to stay by my side...it's so unfair to them! Fortunately for me, there happened to be younger relative that stayed back on the easier slopes anyway, so she and I hung out and had some fun.
Point of the story? Maybe the buddy system would work for you. If there's more than one person wanting you to help and they're not willing to get lessons just yet, then take two along and let 'em know up front you're just giving them the basics and then headed off on your own. Then they can still have a buddy to hang out with (they can share their falls and bruises with each out...how sweet! :P)....and you can still have a great time without feeling obligated to keep them company. Then if they don't pick it up from there, they can invest in lessons because you gave what you could already.
