A reasonable goal, and I know there's wisdom in acceptance.
I guess this is what I, as a somewhat emotional person, distrust about the concept of practicing non-attachment. I always feel as if it lessens the ties between us as humans to want to discount them because they hold such potential for grief and loss. It seems like a flinching away. Perhaps you'll be able to help me to a better understanding here as you have with so many other complicated concepts over the years.
I'll be glad to help as soon as I figure it out myself. At this point, I don't; all I have are a few ideas. For what it's worth, here they are, more or less.
In Buddhist thought, terms like "attachment," "love," and "compassion" have rather precise meanings that are not quite the same as they are in normal usage. The idea being that "attachment" is selfish -- i.e., it gives rise to feelings of anxiety, fear, and grief over losing whatever it is you're attached to -- whereas love and compassion are selfless.
This leads to a lot of confusion, and the perception that Buddhism seeks to purge all emotion. Not so, as far as I can tell: it's more about learning to *accept* emotion, without dwelling on it or trying to control it, like the story about the master who lost his child. If a loved one leaves you, you feel grief. If you get stuck in that grief, it turns to self-pity, and does you a great deal of damage. If you grieve, accept the grief, and let it pass through you once it's done, it'll leave you a better person.
Buddhist thought says a quite a bit about the ultimate goals of being a human -- becoming a perfectly enlightened being -- and frankly not a lot of it makes sense to me at this point. That includes the idea that a perfectly enlightened being cannot experience any negative emotion, because he is perfectly free from attachment (and, having transcended his ego, doesn't have anything to experience it with anyway, which, I understand, amounts to the same thing).
From where I'm at, it looks a lot like an abstraction rather than a concrete state of being. I don't even know if it's an attainable, or even desirable goal, and I'd be extremely surprised if it's within *my* reach ("within this lifetime," a Buddhist would add), and even if it is, it sure as hell isn't within my reach the next time I sit down to meditate. So I don't really worry about it much.
However, the *process* of working toward that abstraction is clearly beneficial. I'm insanely attached to all kinds of pointless things, and this attachment gives me a lot of completely unnecessary grief. If I can stop fretting about having to do unpleasant projects with people I don't like at work, or exceeding the budget of our home improvement project by a factor of two, or having a pain in the knee for the past two months, or not being able to properly digest porcini mushrooms, which I really like, etc. etc., then I'll already be a much happier, calmer, and generally nicer person. I figure that's likely to keep me busy for a quite a while. By then, with any luck, I'll also have figured out some of the tougher stuff, including the possible downsides of becoming less attached to people I love.