Valentines day. An internationally known date in which everyone with a partner is conned into buying ridiculously over priced gifts and affectionate items.
This is another example, in my eyes, of a date over taken by businesses and money making schemers in the hope of commercialising it as much as possible.

Example:
A flower company i know of are offering a bouquet of flowers delivered with a hand written personal message for £100.
The same bouquet is available at any time of the year for £50.

I personally take the approach of - If i want to show my affection to someone, i will show it when i want to, not on a predefined date when everyone seems to be out to make as much money as possible.