Condoms replacement,anyone?

I was sitting with Jovial the other night, talking about God and devil and how devil makes bad things look good and enticing, giving him some examples such as drug, (making people feel high but deadly)

May be i was too quick, i suddenly pointed out that to me condoms were also bad for they allowed teen to get involved in sex without a hinge of worries, Jovial looked kind of perplexed then he asked me "Papa, what is a condom?" I responded," hey, i thought you knew" he reiterated that he did not, so i had to explain and so i explained.

I said," Condom is a plastic,it is used to prevent man's sperm from meeting woman's eggs, so no pregnant " i thought i was done explaining. Jovial responded quickly," Why use condom, use plastic bags can already ma, also plastic what" i said cannot,he said why not and it was cheaper to use plastic bags too.

P/S : Back then nobody told me so