I'm sorry you feel that way.
When I first turned to Christianity, when I was 18 years old, I was of the hippie generation. I was bathed, clean clothes but a street person. My friend and I were turned out of over 1/2 dozen churches because we didn't look like the rest of the congregation. We were getting frantic over who was going to baptize us. We had read that we all were ambassadors for Christ so we figured if we were that then we could baptize each other, which we promptly did so we could be obedient.
Once I gave up the hippie life and became a "normal" person and was all at once "liked" by the churches I never felt a need to re-do my baptism. I felt very secure in what my friend and I had done in a pinch.
Then I backslid. I was left alone with a 2 year old and got my eyes off God and on how I was gonna survive.
After years of being away from the word, I returned and found Messianic Judaism. The "baptism" at that time was more of a change in life style mikveh, a turning back to God. It was not a baptism in the name of the Father, Son and Holy Ghost.
To this day, I have never felt a need to re-do my original baptism. It was done in good faith, for the right reason and with the right attitude. It took, and it kept me safe from straying so far away that I'd be lost forever.
Sometimes unconventionality is the mode to get things done.
That's my story and I'm sticking to it.