Yes, teach the kids. It will not surprise me if, in a generation, the Dallas/Fort Worth area becomes a mecca for Irish trad musicians. We have O'Flaherty's Irish Music Retreat going on annually which draws from around the country, and, we have a children's retreat in the summer and a school of Irish music as well, not to mention the North Texas Irish Festival which is one of the largest in America. The idea is to get the kids interested and give them a place to learn. Certainly, some of them will move along in the world as they get older, but, a fair number will remain and keep the cycle going. Google O'Flaherty's and take a look at the fine line-up of instructors and the wide range of instrument instruction available to a sold out group every year. Yep, teach the kids, and, be sure to "...teach your children well.."