Take a look at the technologies that were used to bootstrap all these startups:

- Google: C++

- Microsoft: assembly

- Apple: assembly

- eBay/PayPal: Java/C++

Like I said, there is simply no room in the early years of a start up to experiment with recent technology. I'd go further and claim that it's actually critical to use older, established technology to get your startup off the ground so you can focus on your idea without being hampered by technological glitches.