In discussions of paedo/credo-baptism, I often hear the paedo-baptist position being supported by references to oikos(household) baptism in the NT. Although this is not the main argument for paedo-baptism, it is used as supplemental evidence. My question is that if oikos-baptism is Biblical, why do we not practice it today. I have seen many infant baptisms, but I have not yet seen any household baptisms. If you ask many paedo-baptists, they don't seem to have an answer. Some people say that it just doesn't fit in our individualistic society (Western perspective). Even the WCF 28.4 says that the subjects of baptism are those that profess faith or infants of one or both believing parents.

If, as many paedo-baptists claim, "there must have been some infants" in the household baptism examples of Acts, shouldn't we also have to claim "there must have been some older family members who didn't necessarily confess faith in Christ but who did not actively refuse baptism" who were baptized as well?

I am looking to hear primarily from paedo-baptists. Just for the record, I am paedo-baptist as well.

Thanks,
John