Learning
There is more to learn than what I can manage in a lifetime.
It was very disappointing when I learned that fact. I wanted to know everything. I strive for knowledge in the most hungry of ways but yet I realized that the intricate nature of the universe prevented complete satisfaction in this regard.
However, many people won't agree with me.
Most people measure their lives in time. This is the least imaginative way to measure life. From this prospective, you are sure you live just as many years as you have during your lifetime. No reason to be disappointed.
Others use a slightly more imaginative and creative way to measure life, through achievements. These may be disappointed or may not. It comes down to the amount of achievements they are striving for. Satisfaction will depend on whether they are able to achieve everything they hoped for in their lifetime or not.
A few others choose to measure their lives by what they learn in it. The hunger for more knowledge, for more understanding of everything, is what drives them forward. It is here that people will always be disappointed. No lifetime will ever be sufficient to take everything in. It is in this group that I reside. I try to assimilate every learnable thing in the world. I don't care much for education - it's learning for life that truly interests me.
Whatever group you fall into, not one group is better than the others. It's just different needs and different shades of gray of essentially the same thing - the search for something substantial. This is the one need that every human being on Earth is pursuing, it's just that the needs can differ amongst us. In this light, there are probably an endless number of other groups that people fall into.
What group do you think you fall into?