I agree that it is annoying to have to look at them when it was maybe some shameful moments in the past.
However, for the current infraction system to work we need to be able to see if users have had a warning/infractions on previous offences so that we issue the correct form of action on any rule breaking we come across.
Wiping them would start the whole system again, giving everyone a fresh start. Something I think should only be done at the end of a year or longer in my opinion.

