I hope you are right and people start to use as currency. At...

I hope you are right and people start to use as currency. At present the advantages are mainly to business (ie less fees) and people are scared of volatility (loss of purchasing power). As the currency products develop (ie see Hedgy) and currency starts rising or volatility decreases, people will start to get on board. But currency is only one facet of blockchain technology.

The beauty of Sidechains is that projects that are not necessarily currency related (though they may also be), can be verified still utilising Bitcoin. This encourages innovation that may be too risky for Bitcoin itself to do, but then if works and is released, it is still attached to bitcoin network for verification and transfer protocols. For example some sort of Smart Contract idea.

All this contributes to the value of Bitcoin (ie basic laws of increased demand and limited supply) and stops the possible fragmentation that current innovation produces (ie see number of altcoins out there). Its a win win for Bitcoin holders, users and companies. Exciting!