f you are saying that transferring cd's or vinyl to tapes sounds better
then you are saying that the transfer is not an accurate transfer and
that the distortion that the tape is adding is one that pleases you.
There is nothing wrong with that but you do have to admit that you just
introduced a uphonic distortion.
Many years ago when I had CD and cassette in the same system, I used to tame the bright, hard, cold sound of CDs by recording them to cassette. That worked fairly well. Back in those days my theory was that the CD could not record the ultrasonic noise that was part of the digital experience (while my speakers could do it easily); these days my theory is that the cassette limited bandwidth and so was unable to reproduce aliasing (which is interpreted by the ear as brightness and hardness).
I'm certain that the cassette was not true to the original, but it rendered the CDs listenable, so it was useful :)