Unfortunately, that type of thing happens all over the world, not just in the EU parliament. I don't think that disbanding the EU would resolve the problem of politicians making decisions about things they have little to no understanding of.
It's also worth noting that most dumb ideas from the EU (including this one) come from the unelected European Commission. The EU parliament, whilst far from perfect, doesn't seem to be quite so stupid, and unlike the EC, the EU parliament is made up of elected MEPs.
I'd be in full favour of getting rid of the EC, but the EU has been a very powerful economic equalizer in Europe, which in the long term is probably a good thing for all European countries. It's also a force that discourages local politicians from being dumber than average, so schemes like punishing people outside the judicial system, or keeping the DNA of innocent people tend to be resisted by most MEPs.
At least, that's been my experience with the EU. Feel free to come up with counterexamples :)