L.N.
well i haven't moved as much as you have, just 8 times in 11 years (since coming to the states). i have made great friends along the way. I keep in touch with those near and dear to my heart but time can go by without contact, and then we pick up where we left off. we still own a home in one the places we used to live so we go there once a year and i get together with my girlfriends. others, come visit us wherever we are living, usually for 2-3 days. i have to make friends, for my kids' sake especially, my husband too. he's shy and not forward in creating friendships as he has led a lonely life until we got married. now he loves it because we have people visiting and he has actually made friends with my friends and their husbands.
i hope to have friends when i grow old and grey :) although i am perfectly content with myself and a good book in hands.
i actually hope to pick up traveling or join a humanitarian organisation later on in life, after kids are all grown and taken care of. that will be my relief and something to live for. don't give up on making friends. it's always good to be noticed, and talked to, don't you think?
:)