anyone who keeps more than 5% of their bitcoins sitting in an exchange rather than secured in their own possession deserves to lose them to exchange hackings.
Nobody deserves to have their money stolen, period. OP makes a good point that after five years, theft and hacking still remains a huge problem in this community. Perhaps that's simply the effect of an unregulated environment, but if so, why would the general public ever want to become involved? They won't, and the price will never go up to the astronomical amounts that many of the bitcoin envangelists claim.