WHY R TOO MANY BELLFLOWER STORE CLERKS SO PERFUNCTORY?

I have not yet met a clerk in bellflower who shows any sort of genuine "how ya doing" friendliness.every now & then I stop in at pizza usa for a slice of pizza to go, and the couple (vietnamese? Filipino?) that owns it used 2b friendly,but now the guy is almost sstone-faced in his interaction. Even when I said "merry Christmas" he just mechanically responded "merry Christmas". Maybe he wanted a tip but I didn't see a tip jar,and its not normal to tip when u do an over-the-counter purchase. And over at the auto parts store,they're not friendly either. I don't know how we can become a better America if people,including the "immigrants" start appreciating those who have made space for them to come and make a living. I wonder if they are working too much and not really living,...not really finding true meaning & purpose in life. A lot of thse clerks seem SO UNHAPPY. I wish I could get them to believe in something MORE than jjust trying to "make it" but you can't even engage in conversation w/ such people,let alone tell them the Good News. I continue 2 pray 4 bellflower clerks.