[nine_k]

Look how rolling his own basically everything, except an OS, seems to work pretty well.

Given time and ability, making what you need almost from scratch may be not just viable, but productive.

[janekm]

Yes, as a lone developer. If you're working in a team it's less likely to work out well as you will have a much more significant training period for anyone to join one of your projects (in a team environment it's wise to go with "boring").