Appeasement-Cowardice?

Was British Prime Minister's "Neville Chamberlain" policy of peace treaty ( munich pact) with Nazi Germany justified.History would prove otherwise because it gave time for hitler to become so powerful that he would unleash his sinister agenda and remembered as the worst tyrant ever.
History sure is not forgiving.Appeasement politics has been around for a period of time.
Mahatma Gandhi did it after his vain attempt to dissuade muslim leaders from striving for a divided new pakistan.
Even when pakistan accused India of usurping states within its boundaries (i.e. J&K) Mahatma Gandhi made sure they got their fair share of the finances ( movable assets) when a lot of leaders were against such an action and India needed them the most because it was going through a famine.
Pakistan for the next 60 years has been following its thousand cut strategy to hurt India where ever and whenever it got a chance.
History has also called the policy of appeasement a pact of weakness or cowardice.
It is all about showing your enemies that you are willing to relent thus giving them enough reasons to attack back.You let them live up their plans just by giving them the space.
So is it right or wrong?
Having the benefit of hindsight and history to back-upon,appeasement even out of good intentions has ended as a firepower for the cannon of the enemy.You know they will only stockpile it for an opportune time and send it back your way.