You sound like a great boss. The best managers I’ve had are the ones that looked at every employee separately and matched their work to their skills and ambitions. I don’t want a promotion, I’m happy in my role. That doesn’t mean I don’t have any ambitions, it just means that I know what I want to do, and a promotion will put me behind a desk writing reports and having meetings instead of the technical work I enjoy doing the most. My ambitions are to grow within my role, not beyond it.