assess the risks. jail time is only one risk in this. for you, the end user, there is a very real risk of sickness or death if you take a pill without having tested it. risk of jail versus risk of death? i know which i would choose.
there is also another choice; go without. dont buy some dodgy pill, without testing, off some stranger in a club. just have a few beers and enjoy yourself. too many people want to have a pill every weekend, and its those people that within a year get a major tolerance and suddenly MDMA isnt that special anymore.
spend the time to find a reliable dealer and test everytime. this is the only way to minimise risks.
but of course do as thou wilt, all i can do is tell you the risks and let you make up your own mind.