When you have a “mother’s day”, every other day of the year is an excuse to kick your mother to the curb. Uch un vay, nebech, for the nochrim.
When you have Yom Kippur, every other day of the year is an excuse to sin without worrying about repentence.
When you have Tisha B’Av, every other day of the year is an excuse to forget about the loss of the Bais HaMikdash.
When you have Shavuous, every other day of the year is an excuse to kick Torah learning to the curb.
See how silly your argument is?
Don’t you think it’s possible… just possible that people can honor their parents and yet still have a day set aside for just such a purpose?
The Wolf