Should the L/D have gone in to coalition? - 5 of them around a Cabinet table with 16 Tories? Nope. They were hopelessly outmanoeuvred.
Which they knew at the time - and because they defer to the membership more than Labour or Tories, they really had to sell the idea.
However - as noted even on this thread - they try to be the grown ups in the room and felt that their decision was best for the country. In a sea of threads where people bemoan the fact that parties put themselves before country, it's a little curious that some people who claim to have been sympathetic to the LibDems are saying they aren't anymore because once the LibDems were stupid enough to not put themselves first.
And whatever the sins of the LibDems, surely the punishment visited on the whole of the UK has paid the weregeld that some feel due ?