I must say that I agree with 411a on this. There are some warnings that you do not hesitate to react to and SOPs that specify what the company wants you to do in a given situation.
In the company that I fly for the SOP states that if a GPWS alert is triggered in DAY VMC and the Captain can exactly ascertain his position then a go-around is not required even when below MSA.
I believe this to be sensible and practiable. However if one does elect to miss an approach for one for whatever the reason there should be no critisim.