You're looking at this way wrong from your post:

• plus the fact my boss didn't even say thank you or goodbye

• any organization that is purely profits-based

• doesn't care about me as a person

This describes all corporations. Corporations exist to make money, not to make friends. Sure, you might find friends at work, in fact it's likely over time, but push comes to shove and you will always be an asset or a liability because businesses don't exist on friendship, they exist on profit to put food on the tables of their owners and everyone working for them. Always ALWAYS ALWAYS place your compensation as your top priority, anything else is self-defeating in nature and only works to fool you into believing there are other reasons to stay in a position. You don't go to some random group of people willing to pay you money to make friends, you find friends from shared interests and hobbies or geographical locations you're locked into like neighbors. Yes, you might make friends at work, hopefully you do, but never fool yourself into believing they won't let you go if it comes down to your paycheck or theirs.