As I lay dying:
what's happening to you is your mind is growing and making more abstract associations. All philosophers think as you are beginning to think - both western philosophers and buddhist.
Your friends and family may gradually seem less interesting to you. You're experiencing what hermann hesse wrote about in demian, and you will likely soon experience something like the character in siddhartha experienced.
One thing to keep in mind: the thinking mind can't actually figure anything out, ultimately. You think with words which are all inadequate for a complete understanding of life.
You will be more happy if you find friends who are like minded. That doesn't necessarily mean that they describe their perspectives the same way you describe yours, but that they also are moving into some higher plane of understanding, and are placing the same value on things as you do. So for instance, you may become less tied to material things, and so your friends should also have that value.
Since the thinking mind is ultimately a trap and you will have difficulty resisting it's allure, there will be a tendency to feel humans are mechanical and life is a joke. That's the trap. Remember to purposely seek fun, and to continue to educate yourself in history, art, literature, music and spiritual philosophy. I'm not suggesting you convert to a hari krishna, but it's good to know as much as possible about all the major religions and to understand many of the simple but valuable lessons in those traditions. For instance, from india we get the pressing together of the hands near the chest as in prayer, the slight nod foward and the speaking of the word "namaste". This has a feeling to it that is human, spiritual and can't really be described with words, although here is a pretty good description.
if you follow a path of enlightenment, which can take many forms, and as I said you don't have to change cultures, then life will gradually get more and more interesting, every little thing will seem more wondrous, colors will be more vivid (unless you already see vivid colors) and you will stop thinking life is a joke. Actually you will be more serious than most people, yet you may seem less serious to them.
However, don't neglect your financial security - your job or career. Buy real estate as young as you can, preferably by age 25, no later than 30. The potential you are developing can do more with money than without. When you are financially strong and stable you are in a better position to help others or to raise a stable family.
Cheers