Between trading and holding, holding will always win out and that's the only way anyone makes substantial gains
Yes. I agree. Maybe the best option is choosing some coin with great tech/team and hold it long time.
This may happen. But I think it's a long time to happen and if this happens we're probably already adults. Before this happens I think it is necessary to fully adopt the crypto that is used in simple transactions such as buying groceries, shopping. And in other words it's easy for everyone to use.