So, you're saying that the infant baptism isn't recognized because baptism is a witness to others that you have accepted Christ as our Saviour. and you can't really do that as a baby.
Essentially, yes.
I'd only add that it's seen not simply as a witness to other
people but that Scripture is thought to support the idea of it being a religious obligation, an act by which the person puts an overt act behind his intellectual decision to accept Christ.
And the mormon baptism, even though it was a witness to others, it was done for the wrong reasons (remission of sins and first step to receiving the Holy Spirit) and wrong authority, so it isn't recognized either in Christian church settings.
Well, Mormon theology is so different from conventional Christianity that LDS Baptism can hardly be considered to be what the Bible describes. Just about every denomination, whether Protestant or Catholic, agrees on this.
As I mentioned in a previous post, I'm not against getting baptized again, I just get the nagging feeling that someone somewhere will come along and say, "well that baptism was done under these circumstances (...FILL IN THE BLANK...) ....so it's not actually recognized"...
What is the be-all end-all authority on this matter? Different Christian churches claim different views on such a simple basic matter (I hate to put this out there because the mormon church is false, but this is the one thing the mormon church criticizes other Christian churches for)
Just about all Christian denominations agree on the invalidity of Mormon Baptism.
The division among them over infant baptism vs "Believer's baptism" boils down to whether this Christian sacrament/ordinance is something God does to -- or for --
us (marks us as a member of his church, imparts the Holy Ghost, etc.) OR, on the other hand, that it's something we do for God (witnessing, confirming, as previously described).
Which approach you take, we can't really decide for you, but it's only the Baptist and Baptist-influenced denominations that take the latter approach, which was unknown until the Reformation and considered shocking by everyone else when it was introduced by the early Baptists, Amish, and other small groups. And if you want to decide the issue by turning to Scripture (which everyone on all sides says to do), you'll find support there for both arguments.
One thing appears certain. Almost every other local church you might consider joining considers your infant Baptism to be valid. The one you are attending, apparently won't, so how do you handle this in your own personal life?