There's also a disadvantage which is that you worry day to day about finding salary at the end of each month. I found at my startup this made it difficult to concentrate on the bigger picture of developing the product.
There's an incredible book, 'The Eureka Factor' by John Kounios, that explains this point in detail.
A brief note to your point: for many intuitives and creatives, a base net of safety is required to allow your brain to think outside the box. It even goes as far as to say with an abundance in resources, more creative things occur.
I've been suffering with you (in kindred spirit) for a few years now and am looking forward to attracting the resources to unleash.
Another disadvantage is you miss out on contacts, industry expertise, etc. If you find the right VC truly interested in helping your startup grow, they can be an incredible source of knowledge and networking.
