It's very easy to blame simple people for the mess that capitalism created. "They spent a lot". Really? Who's to say? Did you ever wonder how much is spend on high tech weapons by your government? Do you KNOW what YOUR country's public debt is? Are YOU responsible for it (because you're gonna be held accountable for it either way).
As easy as it is to buy mainstream media "analysis" it's also just that - mainstream, meaning that it is designed to keep the powers that be from safe from criticism.
What happens in Greece is that we're taking loans upon loans to save defaulted banks that are based mainly in Greece, Germany and France. Tax evasion, porsches' and the rest are dirty propaganda designed to hide the crime that's being perpetuated. Saving failed capitalists (mainly banks up to now) by robbing the laymen.
As for the tax evasion bit, it's mostly true if we are to speak for a small fraction of the Greek population - namelly the rich and superrich Greeks. All the rest are paying our due for nothing - meaning that our taxes (for me it's about 50% of my gross income) are used to refinance loans and not a single dime goes to roads,health or education.
Bear also in mind that for two decades every banks were all over people to persuade them to get loans (sth like the mortgage situation in USA) which were used to buy shit from Germany and France (that's why many say that these countries surplasses are European south deficits). This was evident at a state level too with huge amounts going to buy arms from these two countries. Arms that were of no use.
Anyway, this issue is far from simple and what's more you, no matter where you're from, are far from just spectators. What happens in Greece (namely the ripoff of any hind of welfare state + the death of the middle class) is just an experiment to be continued in virtually every western country. It's the way that western capitalism wants to proceed - and bear in mind that what really counts is workers wages (that have been slashed in Greece since the begining of all this crisis) - many big heads waiving their finger have told us Greeks, that the only way to get back to economic development again is to be OK with chinese salaries. We're trying to take that fingers and put them back where they belong and maybe you should try thinking your line of defense against those failed bussinessmen and politicians.
A Greek.