I think we all sold our ETC when it magically appeared on Poloniex and we basically considered it as winning the lottery since we still got to keep our ETH and the ETC was a free bonus. However we all sold it very cheap and if we were patient then we would of gotten almost the same value as ETH during the split ($15 ETH/USD).
So lets say we sell our BCC very cheap. And then in 2-3 years, after all the bugs get sorted it it eventually overtakes BTC. And when it overtakes BTC might become lower than BCC.
Another issue with this is the BTC payments we receive AFTER the fork. Lets say we decide to hold BCC. But any payment we get after the fork, we will only get it on the main Bitcoin Core chain.
Then in 2-3 years, when BCC over takes BTC, we won't have the difference in BCC since it happened after the work.
If there is a chain split do you own both coins?