There is so much importance attached to showing gratitude and you have stated many for anyone who cares to learn.
Even the scriptures said we should let our praise exceed request. Showing gratitude is a habit and it's something worth encouraging people to emulate.
It's a good habit to adopt. A good attitude to have. The Bible even told us that a grateful heart would be enlarged. We always have things to be grateful for.
We have always learned something new from your words and also you have mentioned many special things in this post, so it is true that if we have a good attitude towards others and help them, they will help us. The world will do in the same way as the elders used to say that you will get what you do, so we are seeing that example coming true in the world, so it is better to always help each other so that all people life can be easy.
Being grateful shapes the way we see life...the way we see things and others. It's a way of life we should adopt. Gratitude changes our perspective.