Originally Posted by
dr_lha
...chains break infrequently enough that carrying spares for that eventuality is pretty pointless.
Well, the master links are cheap and I will use them anyway and the cutoff links are already paid for, so there is no incremental expense. I'll gladly cart around the extra 25g (with chain tool) since I ride for exercise anyway. I have only had one chain break but i have helped others with my spares. Worth it to me, YMMV.