If everyone create their own currency and doesn't got a good features then it will be a dead coin, because the only one using it is only yourself, it is easy to create your own currency but it's hard to convince other to believe and used your coin, even if there are already people using your coin you still need to dedicate your time to make improvements and introduce your coin, so creating one coin won't make you less motivated
I agree. Not all the time we create something will be adopted by users, investors and enthusiasts. If we are going to create our own currency cryptocurrency world will be like a dumping site wherein a lot of shitcurrencies that does nothing to help economy to improve because all are creating trash. It like a quantity over quality which is nonsense because we only create it for ourselves.