Increasing the supply of bitcoins will only give bitcoins new problems and the real purpose for bitcoins to be created will also be meaningless.
Satoshi Nakamoto created bitcoin and put a strict limit on the amount of bitcoin supply of only 21 million, it is a hard cap that will not increase and is the core proportion of bitcoin's value.
Bitcoin is protected from changing or adding to its amount by its incentive system and governance model. Thanks to bitcoin's proprietary architecture, the entities that control Bitcoin's rule set have a solid incentive to reject hard cap changes, while those who wish to change them have no ability to control the network.
Although adding supplies can be done with the approval of the community, it will not be that easy to do.
It's very unlikely Bitcoin will experience a change in supply sometime in the future. Developers are better off leaving it as is for the good of the project. Besides, there are quadrillion satoshis in existence. That's more than enough for the whole world to use. Things would've been worse if Bitcoin was only divisible to two units. Being highly-divisible, is what makes Bitcoin completely unique from Fiat.
The problem with mass adoption is not the supply, but rather governments becoming an obstacle against the cryptocurrency. They don't want people using it, especially when they can't control it. Decentralization is the antithesis of everything traditional Fiat currencies have stood for since their inception. I'd expect more opposition against Bitcoin because of the way it was designed. There would be no reason to worry about this, especially when the cryptocurrency lives on the Internet. People will eventually discover it, greatly contributing towards its adoption worldwide. Who knows what would be of Bitcoin 1-2 decades from now? Just my thoughts
