Nothing is permanent

Someone I've somewhat recently lost in my life in one way or another once told me that when you do lose someone in your life whether it be by them dying, moving away or a breakup etc. instead of focusing on the loss you have on your hands you should think about what you gained from meeting them... Here's what I gained from this person. They always told me, from a buddhist perspective, that "Nothing in this life is permanent." I know this person meant it in a buddhist light, and didn't mean for me to take it the way i did, but what you learn from people is always open for interpretation in my opinion. So this is how I see it and what I learned... Nothing in this life is permanent... So why get attached. People have argued this point with me for hours, I'm mearly writing this entry as an outlet, so argue if you must but I'm not looking for a discussion particularly. ANYWAYS. We fall in love to fall apart. We stand by our friendships with honor and respect, only to be disrespected or simply grow apart because lets face it 90% of the friendships we obtain throughout life deminish or simply just stop. Then we spend all our time with our family, parents, siblings etc. Only to be with them til the bitter end and eventually have to bury them. I've come to the conclusion that this is why I always seemed to value my solitude. I mean yeah I'm a pretty social person, but I feel safest when I'm alone. No attachments. No distractions. Just me, the only thing I will never lose. The only thing I can depend on. We can't depend on the people in our lives all the time, because they won't be around forever. We can't depend on the earth beneath our soles because lets face it, not only is it depleteing with every chemical filled breathe we take, but it's changing. Nothing remains the same, nothing is permanent. Call me a pessimist. But I say I'm a realist. Depend on no one but yourself. Because in the end it's all you have left.