if (yearlikedislike == "yes" or "Yes" or "YES" or "yep" or "yup" or "Yep" or "Yup"):
Strings evaluate to True. I know you think you're saying that if yearlikedislike is equal to any of those things, keep going. However, what you're actually saying is:
if yearlikedislike equals "yes", or if "Yes" exists (which it does), or "YES" exists, etc:
What you want is either:
if (yearlikedislike == "yes" or yearlikedislike == "Yes" or yearlikedislike == "YES")
or better:
yearlikedislike in ("yes", "Yes", "YES", "yep", "yup", "Yep", "Yup")
