What are some issues preventing you from developing and finishing your project?
Time - meaning life, wife & two kids (1 & 4 years old). And the fact that I'm already Art Lead @ professional game studio... after doing the dream job 8 hours a day there is often little juice left to push forward my own projects because that would mean burning some serious midnight oil. I rather sleep! :)
Blitz3D is also so outdated techwise that it doesn't make you tinker with it for that reason... and also limits what kind of (game) projects you can do with it, if you want to be commercially successful too. Casual-blow-the-diamond-whatever games are just not interesting for me.