The suffering that we get when we lose something we love is not true suffering, because it has already been balanced out with all the good memories it was able to offer us. We might be temporarily sad about losing our car, but we can still look back at photos of and remember the road trip we took in it and relive the happy memories it gave us. We might be grieving over a family member who has passed away, but we can still always look back on the happy memories they have given us. Importantly, attachment cannot be suffering because, for that attachment and bond to have been created in the first place, joy must have existed at some point in that relationship.
The moments where we truly suffer the most are moments that make us sad without giving us anything in return. For example, when minorities are discriminated against or in the cases of true evil and injustice in this world.
Attachment is a beautiful thing, and it might be sad for a while when we lose the things that we are attached to, but this sadness cannot be suffering insofar as there is light to balance out the dark. And attachment can always transform and extend itself and doesn’t simply center around one object. Your favorite car may have broken down, but that gives you the opportunity to go looking for a new one. You might have lost someone who you loved, but in the process of grieving, you might develop a closer bond with someone else and find new solace in your relationship with them. In this way, attachment fixes itself and is not truly long-term suffering.