Yes, I did believe that Bitcoin exchanges and hardware wallets were a good idea, even necessary to support and grow the Bitcoin ecosystem. As a decentralized cryptocurrency, it's important to have secure ways for users to store and manage their funds.

Exchanges play an important role in enabling users to easily buy or sell Bitcoins with traditional fiat currencies as well as other cryptocurrencies. They also give people access to advanced trading features like margin trading and limit orders.

Hardware wallets are another crucial component of the Bitcoin infrastructure because they offer secure offline storage options for private keys. This added layer of security vastly reduces the chances of malicious parties gaining unauthorized access to one's funds stored in digital form.

Overall, both exchanges and hardware wallets help make it easier for regular people to safely use and engage with Bitcoin. It is my fervent hope that these infrastructures will continue growing in tandem with developing interest as they play a critical role in onboarding new-comers into crypto verse along how various parts like cold storage works side by side elminating confusion some poses jeopardy considering risks associated hacking attempts on exchanges/centralised party wallet providers/etc cybersecurity threats all actors eliminate if decentralisation is lived up-to!