What we're talking about here is thanks, appreciation, and all of us are normal to want it.
However, we really have little control over it – we do a good deed and whether the other person thanks us is up to him or her.
But we do have some control over how we choose to feel about it.
In a personal relationship, if you're never appreciated, it's serious business. You have to communicate and work at it to get it, or give up and suffer, or walk away from the relationship.
On a forum such as this, when you aren't thanked -- for your own good – you simply have to zen out. You're not going to change the guy, and to whine about it usually means that you just feel bad about it for a longer period of time. So the guy's a jerk, a taker, and it's best for us to just forget about it. Life's too short to feel angry for one second more than you have to.