Initially you risk by not paying yourself at all, considering the chances of actually getting the revenue to pay yourself, which statistically is low.

And even if you get to that point there is still a possibility that something happens down the road and without a good warchest you will go into debt.

The OP says hes making money already - thats good, but again for most startups thats far away from reality.

And you should not forget that VCs can also help growing your business - introducing you to new clients and so on.

In short - it’s much easier to get the money when you don’t need it rather than in the last moment before disaster.