Time wasted, money wasted.. plans change, life happens.. what are you left with? A house with "get it by" repairs and "not going to be here long" patches. You wake years down the road (STILL IN THE HOUSE) with the reality of having to not only fix those areas again, which is time, material, and headaches of finding the right contractor; but also the possibility of other problems caused by poor planning and looking through rose colored glasses.
When you are faced with the problem of doing a repair, don't choose the cheaper route. Instead do what is best for your house, your $$Investment$$. Just because home prices/values have dropped.. it doesn't mean that they will not go back up, or that a home that was poorly maintained will not lose even more value because of this.
The proverb "damage suffered makes you knowing, but seldom rich" cannot be truer.