I was a student at both King's and LSE. I loved both, my experiences (intellectually and socially) were outstanding, and I have no regrets at all about the choices of institution and course that I made. Sure, some people are going to arrive at a university and find that they and the institution are not a good match, and ultimately they may decide that they need to leave. The point is that happens everywhere, and I know of no sound basis on which to claim that this happens more at LSE than at any other top university. To the person who posted that they were very unhappy there - well I am very sorry for you, but there's no reason to think that just because you had a rough time with the place anyone else will. It all comes down to personal preference and each of our individual natures.
Some other observations about this thread:
That comment about SOAS made me laugh (a guilty pleasure).
Stating "I go to Stanford, the 2nd best university in the world" is a sure way to make everyone not like you. Really. As if there is any agreed, non-contentious way to rank the world's universities and make such sweeping generalisations (and yes, I am aware of the league table compiled somewhere like China, and subsequently re-published in an article in The Times).
Posting things like "some bloke told me the LSE has loads of drug-takers" (I paraphrase) is, I think, a little irresponsible. Since so many school-leavers use this site to help them with difficult and important decisions about their academic careers, we really ought to be more concerned with facts and informed opinion rather than such outrageous slurs.