Screwballs:- if you ever want to make Captain, you will have to learn to make decisions, so make one and STOP! Don't think that you will be better off getting airborne and sorting it out; this is a good time to use your initiative and do the "safe thing". The workload will be so much easier for you.
I seriously wonder if a blanket STOP decision is the right one, surely it is circumstantial as stated in the many posts above? Runway length, Density Alt, loading etc.
I suggest the key is to make a decision, based on the circumstances - and work it through. Indecision is what will make an accident out of an incident.
And small caveat on that comment is to obviously make the right decision! 