I found a video that details 8 common objections to Bitcoin (BTC). There are the objections:

1. BTC is too volatile to be a store of value.
2. BTC has failed as a means of payment
3. BTC is bad for the environment
4. BTC is not backed by anything.
5. There could be a bug in Bitcoin’s code that could render it valueless.
6. Regulations can slow Bitcoin adoption
7. People could lose interest.
8. There are unknown unknowns.

The following video addresses them all...