No, if nobody invests, then there will be NO goods and services at all. That is a recipe for economic calamity, and would create a situation where guns and ammo would end up more valuable than any currency (what is the point of holding a currency if you can't buy anything with it?). I have yet to read a convincing explanation as to how deflation is a good thing. The general premise is that a 'little' deflation is a good thing because it encourages people to save, but the authors always fail to address the fact that deflation leads to more deflation and hence the 'deflationary spiral' that eventually causes things like the great depression. One author actually argues that the Great Depression was a good thing, but I don't exactly agree with that sentiment.
Once again, Gold is a better comparison to bitcoin than any fiat currency, because bitcoin is not a form of exchange for any particular economy and the dangers of deflation do not necessarily apply. More than anything, bitcoin is being used as a store of value. While this doesn't make for a good currency, it does not necessarily mean bitcoin is doomed.