Surviving without What We Thought was Vital

I've been without a car for almost a month now...my beloved car broke down and I haven't managed to replace her yet. We called her Betsy because she reminded me of an old lady that was really cool when she was younger. When Betsy first broke down I thought I need to get another car immediately; I can't survive without a car. It has been about a month now (maybe a little over a month) and I am still without a car, but although I miss having Betsy and the amount of freedom that comes with it I am still doing much better than I expected. At first I was willing to buy any car just so I wouldn't be without one but now I am in no rush anymore...I want to find a perfect match; I want to find the car that will eventually mean to me as much as Betsy meant to me.
This experience made me think about people in general. We always have a fear of losing something that we've become accustomed to having; thinking that without that thing life would have no meaning. But the truth is we, as people, have no need for anything or anyone. Having things and people in our lives might make life easier and more enjoyable but in reality these things are not a necessity we can still live just as easily and just as happily we only have to teach our bodies and minds to re-adjust to the new realities.
About three months ago, I got in a conversation with one of my best friends, who I used to see everyday and talk to at least 4 times a day when we're not together. The conversation was about how we couldn't imagine our lives without each other. How it would be horrible and neither one of us would be able to survive it. Three months later, I barely talk to him anymore, and I don't feel like I am missing out on anything. I feel bad that this is what we got to; we were inseparable. And I think I am talking about this now, because I feel a little guilty because I've been ignoring his calls lately but I got to see a side of him that made me lose a lot of respect for him. How can I still be the same towards him if I barely have any respect left for him? All that I see when I look at him is a weak pathetic person who keeps trying to logically justify his weaknesses and nothing pisses me off more than hearing him validating his self-destructive behavior. I care about him...I really do. But I will not stand by & watch him dig his own grave knowing that when it comes down to it he might even be able to find a logical explanation on why he should throw me in that grave instead. I went from telling him everything that goes through my mind; he knew everything about me, to telling him absolutely nothing and even purposely hiding things from him.
I think I hold myself to high standards when it comes to friendships. What got me through what happened between my parents were the loyal friends that I had. And I think that that particular experience made me appreciate having loyal friends in my life and from that point on there is nothing that I wouldn't do for my friends but I also expect the same from them. Knowing that I would always put my friends before myself I tend to expect a similar thing from them. But I also know that as a friend I would never allow them to make a sacrifice for me. This combination of things makes me expect a lot from them...not certain actions per se...But feeling that the will to do them exists. I think some people go through life without having great friends that they can rely on and therefore they go through life with little to no expectations from who they call friends. But I think having had great friends I have high standards for new friends that come into my life. And I think we all should hold ourselves and others to high standards of friendship.