IS HAPPINESS DECLINING THROUGH GENERATION TO GENERATION?

As a new generation comes along new parents promise themselves that they will be the best parents they can be by giving their child more than they ever had growing up. More of anything feels like the right answer to removing their child's desire to want and replace it with now i have, now im sated. Most people believe  that craving something that you cant have will lead you to resentment for those who possess what you desire and the longer you crave the things that you cant have the quicker you'll reach unhappiness and remain there. Having everything you could possibly crave actually creates the opposite affect because as the new generations arrive their happiness declines with their motivations even though they are born with certain  privileges. When parents give everything  their kids ask for they take away their child's own ability to challenge themselves in obtaining what they want on their own. It is the challenge to the goal that helps motivate you but when the difficulty is removed everything is too easy because you have reached the goal with assistance not with own merit which makes the rewarding experience feel unsatisfying. The issue is parents dont want to see their kids fail and go through the sadness that comes with failure but this is what pushes them to learn from their failures. So we give them no chance to fail but we also take away the chance of trying which will lead to an unhappy unsatisfied upbringing. So give them just enough and not too much otherwise your spoilt kids will be lazy and not appreciative of your intentions.