What are the advantages and disadvantages of the FPTP (First Past The Post) voting system?

FPTP voting system is a single-member constituency, plurality system used in British Parliamentary elections to elect representatives (MPs) to the House of Commons.It has a number of advantages including: 1) it's simple (each member of the electorate can vote for one candidate), 2) it tends to lead to strong governments (the system favours the two major parties, ensuring one party has a majority of seats in the Commons, often giving the government a clear mandate to rule), 3) it promotes non-extremist policies and parties (a party has to have both concentrated and broad support across the country to gain notable numbers of seats, which encourages the centralisation of policy to appeal to the greatest number of voters).Disadvantages of FPTP include: 1) you don't need a majority of support to win a seat (you only need one more vote (a plurality) than the runner-up to win a seat, meaning if there was a left-wing party candidate with 35% of the vote, and two right wing candidates from different parties with 33% and 32% of the vote each, the seat would go to the left wing candidate, even though more people wanted a right wing candidate. 2) the result is often very un-proportional (if the previous example occured in every constituency in the UK, Parliament would be entirely made up of left wing party MPs even though 65% of the public would have voted for right wing candidates). 3) FPTP encourages 'safe seats' and thus wasted votes (in constituencies where the socioeconomic factors are such that one particularly party continually gets voted in, such as Tory stronghold in Wokingham, anyone in that constituency who doesnt want to vote for the Conservatives has effectively 0 choice, and their voted is wasted - this can often lead to disallusionment with the system, and spoiled ballot papers.