It might be plenty, depending on your emergency. But you never know when you might be asked to care for an ill family member, suffer a health setback yourself, or end up out of work in a soft labor market - which we are currently in. It’s a risk based decision, but as price-to-earnings of potential investments is currently incredibly high (suggesting unrealistically high future return expectations), I would hedge on the side of more savings rather than earlier investment.
I don’t recommend it, but it can definitely give you a perspective of the kind of shit people have to put up with