We've gone through this a couple times, older students leaving to go to another studio, but it never gets easier, how do you deal?

Our situation is that we are a small town with a decent sized school, but not enough students to be super selective about who is on our teams, or all of our teams would be only two or three students and we like to give as many hard working kids an opportunity to compete if we can. Our kids do well at competitions, but we aren't one of those huge powerhouse schools, so when our best kids start to really shine above the rest of their peers, they go into the bigger city and attend one of those power house schools. After leaving our former students do well there, they get solos and are in the highest levels, so they clearly have good training, but that only makes me feel better for a little while, it still hurts to lose those kids you've taught for 10+ years and have begun to feel like your own kids.

So, looking to hear from others who have experienced similar situations, how do you cope?