You mean feeling good about giving the praise? That's exactly what's meant to happen. It's uplifting, but rather than being one-sided, it has the dual benefit of of uplifting someone else first!
I've never praised someone genuinely and had them reply with, you're an asshole, fuck off! They've mostly said thank you, smiled or indicated in other ways they were grateful to have had their efforts acknowledged. They feel good, and I feel good having made them feel good. It's a simple concept and it's not at all a problem to feel good about having done it. The praise must be genuine though.
You are right. I have met people who have never received an honest compliment and always value when I give one, because they know I don't have time for bullshit. I am always glad to uplift and see that smile. I'll practice that more often!