This will be the 3rd time I've pasted this information on this site. Its impressive to see how easily people believe disinformation when it fits in with their stereotypes.
Please note the source is the US Department of Justice.
http://www.ojp.usdoj.gov/bjs/abstract/rsorp94.htm
Within 3 years of release from prison:
3.3% of child molesters were rearrested for molestation
2.2% of non-molester sex offenders were rearrested for molestation
0.4% of the entire set of released criminals were rearrested for molestation
43% of sex offenders were rearrested in total (any criminal charge)
68% of non-sex offenders were rearrested in total (any criminal charge)
In general you can fairly say offender type X is more likely than other criminals to recommit crime type X, but overall its a misconception to believe that sex offenders re-molest frequently or that they are rearrested more often than other criminals.
If you believe those facts not to be true, you really do need to provide some backup for your opinion better than "i heard it on some talk show"
If we don't register murderers, drunk drivers, violent criminals, or thieves (all of whom are more dangerous to your kids than child molesters) why do we register sex offenders?