Jeez don't take it personally

Er lolnoAV?
The point of course being that you can pick scenarios where FPTP, AV, PR, (insert voting system here) fails or is less than ideal - there is no perfect system and coming up with contrived scenarios in which one system may be better than another without looking at the bigger picture is rather pointless.
Realistically, a Tory voter (which is basically what you seem to be referring to), or any voter should never feel 'forced' to just vote for one party - the whole point in AV is that it promotes ideological flexibilty. Unless you are some extremist 'all or nothing' voter, with AV in place it provides a natural environment for alternative parties or platforms to thrive - UKIP, the English Democrats - the current Tory party which is probably best described as the 'Social Liberal Economic Conservative' party.
There's a great article on FPTP on the BBC site, that the last time it worked 'properly' - i.e. each candidate was elected on over 50% of the vote was in 1955. The current 3-party system, as well as the increasing ideological flexibility of the population away from traditional RED VS BLUE politics means that FPTP is singularly unsuited to the current voting patterns unless you happen to get a convergence of voting results that ends up in a hung Parliament.
In a country where the vote is split 36%, 29%, 23%, there damn well should be a coalition government rather than a party ruling with a majority based on just over a third of the voting population's support. The fact that a party gaining 23% of votes translates to 9% of seats is a travesty in itself.
However uncomfortable it may be for Tory or Labour supporters who are able to command outrageous majorities out of proportion to their support, a representative government is supposed to be representative of the people, for better or worse.