If you are actively helping merchants to accept Bitcoin for any purchase, no matter how small, in a move towards mass adoption, why are you also stating that you'd prefer those smaller transactions on another chain
I never said "on an other chain". I said "off-chain".
That's simply because that it is much more efficient. It really makes no sense to try to address all business needs with one single solution.
Bitcoin is a very expensive technology, it's vastly counterproductive to try and insist that every customer gets addressed the same way.
The question that comes more frequently is certainly not "will we be able to stay on-chain?", but it is "why do we have to wait 10 minutes to receive our money?".
The true value that Bitcoin brings to the table is not "everyone gets to write into the holy ledger", it is instead "everyone gets to benefit from sane and non-inflationary financial instutions whose sanity and honesty are ensured by the holy blockchain".
Do you genuinely think that the level of security provided by the blockchain is absolutely necessary for every single transaction? Do you honestly think everyone will be able to educate themselves enough to grasp how bitcoin actually works? and actually use it properly and securely?