Over the years I've seen some pretty interesting behaviour with regard to people pushing on in very suspect conditions.
I've diverted from London (to Amsterdam) when another airline (that many of you like) most definitely landed outside of the Boeing designated limits. We treat limits as absolute, whereas they consider themselves to be at least as good as the Boeing test pilots, and so consider them advisory only. In HK I taxied away from the runway and back to the terminal, having decided that I would not take off, only to see another airline go...and they'd recently lost an aircraft in similar conditions.
My employer has always relied on their Captains to make valid calls as to the safety of an operation, and there is no come back whatsoever at any safety based decision. Others either don't have that discretion, or don't use it. Some of the hiring practices now in use (i.e. using third party companies to supply pilots) makes it very easy to bring undue pressure to bear. That's something that a mature operation won't do, but I see plenty around that vary from cranky two year olds, to sulky teenagers...