Guys, I've read all of your replies, and thank you for them. When I said waste of bitcoin addresses, I meant that I find it a big waste of addresses to change your address for every payment if they are limited (but a huge number). Like wearing a T-shirt only once for every new day, and then never use it again.
Some people consider Proof-of-Work, a consensus mechanism that requires miners to constantly expend energy in order to find a new block, a waste of resources, but without PoW, bitcoin would have already been captured and destroyed. However, they don't care about possible unintended bad consequences that may come with switching to a less wasteful consensus algorithm because they think bitcoin has no real value at all. Spending any amount of energy on something of no value may be considered a waste of energy. The same rule applies to "waste of bitcoin addresses." If you don't see how non-reuse of addresses benefits your privacy and protects you from other external attacks, you automatically consider it a waste of resources.
But now I've discovered from you a new problem, I didn't know that two different wallets can generate the same address. If this happens (although I know mathematically is almost 0) where do the bitcoins go? To the first wallet that created the address or what?
We will never know where those bitcoins would go because by the time it happens, the universe will have collapsed to non-existence.