When we do not know the HOW -- including whom, when, but mostly WHY -- of gifting/giving then we debase ourselves, and may even harm the other.

One reason I do not play a lottery ticket (which is only a few times a year, and costs a couple dollars) is when the prize goes over one million.
Why? Because then I'll have to worry MORE about how to BEST give my money away.
In other words, giving has consequences: good And bad.
Hustling for one's feeling good as by having the receiver at least recognize your giving is to have devalued oneself even before the act of giving.

Good giving requires work -- effort to ensure it will, to the best of your sincere efforts to ensure it will do good/reduce harm to people-and-nature around us.

Even a Nobel Prize winner, the late one in physics, Richard Feynman, has said of them as only epoulettes. just flourishes, on one's shoulder. The Pursuit of knowledge is its own reward. I think he wud say: Doing the GOOD work alone is the reward, whether it is via your time, money, status, strength, health....
Yes. we say,'thank you often' many times a day, but it's just a formality -- without Really feeling grateful. And BOTH sides know it. To expect otherwise is to forget that good must be done even when it's Not recognized. That's a good rule for a good life.