Allowing priests to marry -- whomever they want -- would not eliminate sexual abuse but it would rearrange a protected balance of power inside the Church; a balance so far out of proportion as to nearly identify the Church as a safe harbor for social deviants. This cannot be the outcome Christ intended. For non-Christians who nonetheless have deep respect for religious freedom, it is a sad spectacle; committing the Church to cover-ups and denial.
The propensity for sexual abuse will rise in any church where absolute power is vested in those who obtained the privileges and authority of the priesthood. The difference, today, is the pressure of the 24/7 news cycle and the fact that through the internet, all is revealed.
With the Pope's resignation, -- no Pope has resigned in 600 years -- then surely other Church traditions can be broken, allowing the wounds of secrecy to heal. The Church can be healed from within, when abstinence is voluntary instead of compelled and where sexual needs are acknowledged for all the living.