Bit of a dilemma?

The British Olympic Association's stance on imposing a lifetime ban on competing in the Olympics on any GB athlete who tests positive for a banned substance has been declared invalid by the Court of Arbitration for Sport, and as a result Dwain Chambers (see post dated 18/2/08) becomes eligible for selection for this summer's Olympic Games.  Opinion seems to be sharply divided as to whether this is a good or bad thing.  I can't make up my mind - on the one hand my natural inclination is to give anybody a second chance, but I can also appreciate that if anything but a long-term ban is imposed there will be a temptation for sportsmen (or women) to take drugs on the basis that if they're caught they can serve their four years or whatever and still have something of a career left.  Of course, the fact that Chambers is eligible doesn't automatically mean that he will be picked, although, as I understand it he is currently our best 100 metres runner, so it would be difficult to ignore him.