Atheism

Suppressing them.

Your entire argument here is around discouraging sexual promiscuity (which is exclusively being advocated for specifically with consenting adults) and yet you also argue that a lack of reproduction/sex directly leads to grooming.

You can't have both sides.

On top of that, many aspects about the church can lead to grooming that aren't sexual repression, namely the power dynamics of religious officials, and the idea that those who are religious are more inherently "ethical" or "good" than others, and are thus less likely to do wrong.