Why are americans constantly degrading their English? The biggest one i see with everyone these days is then they pronounce "s" like "sh". For example S-trength->SH-trength, Stress -> SH-tress, S-tream -> SH-tream.. and so on.. it is bizarre.
@Justicar
The "s" is the Voiceless alveolar sibilant, but the "sh" is the Voiceless alveolar retracted sibilant.
(source: https://en.wikipedia.org/wiki/Voiceless_alveolar_fricative)
Languages change. The cause may be cultural such as happened with the Norman invasion of Britain under William the Conqueror when English gained many influences from Latin. The cause could be a shift in commonly used phrases that make the change of the tongue from one shape to another more difficult or easy.
