This is a subject on which my view has changed. Now I would have to say something like: Yes (as a generalisation) most Christians (except those who are called to celibacy, for various reasons) should be aiming-at one, permanent 'marriage' - but I have to put marriage into 'scare quotes'.
I would say that Chrstians should get really-married; which here-and-now has almost nothing to do with the institutions that call themselves Christian churches... in so far as 'Christian churches' may, at some point in the future, actually come back-into existence.
Because; let's not forget that the self-styled Christian churches have (for the past few months and currently) agreed that they are 'non-essential business', have closed themselves down, and ceased conducting marriages - and done so without any defined end-point.
So - the situation is that 'legal' marriage (civil marriage) is a sub-worthless, non-contract (not a contract, because its promises can legally be broken unliaterally without penalty) - under a continual process of subversion, erosion, re-definition, and indeed inversion. So legal marriage is clearly immoral.
What of church marriage? As a generalisation, it is no better than civil; because the major Christian churches are revealed to be net-evil institutions. To insist upon having one's marriage validated by - for example - the Church of England; is morally equivalent to approval from a government bureacracy, or the mainstream mass media - since that is what controls the CofE (or rather what the CofE is part-of - bureaucratically and psychologically).
So, a Christian couple should get married; but the moral and spiritual focus of their marriage must come from each-other or it will not be there at all.
Whether you want to call this 'marriage' or not, is up to you; but when external authorities are so obviously evil, then one should not regard this form of demonic approval as the essence of a transcendentally vital sacrament.
It is precisely because marriage is of such central Christian significance, that Christians cannot any longer allow marriage to be owned by external institutions.
