I don't have any empirical evidence, i.e. factual proof to back the claim I am going to make; but I still consider it worthwhile to make it nonetheless. Here is my hypothesis, i.e. the claim:
Patience is in shorty supply today. In other words, people today seem to be more impatient than they were in the past.
Well, you may be thinking what prompted me to form a hypothesis like this. Let me give some examples to illustrate my hypothesis.
Example 1: Person X has just finished his college and has got into his first job with salary expectations Rs Y. He expects his salary to increase like a geometric progression and he is not going to wait for it. If it does not happen as per his wish, he starts getting impatient. This impatience can then manifest in the shape of his frustration, or can see him losing temper frequently, or can even see him leave his job.