Why don't Jehovah's Witnesses celebrate Valentines day?

Jehovah's Witnesses do not celebrate holidays with pagan origins or holidays associated with what they view as unbiblical religious rites. According to Wikipedia:

"Though popular modern sources link unspecified Greco-Roman February holidays alleged to be devoted to fertility and love to St Valentine's Day [...] Earlier links as described above were focused on sacrifice rather than romantic love.

In the ancient Athenian calendar the period between mid-January and mid-February was the month of Gamelion, dedicated to the sacred marriage of Zeus and Hera. in ancient Rome, Lupercalia, observed February13 through 15, was an archaic rite connected to fertility. Lupercalia was a festival local to the city of Rome. The more general Festival of Juno Februa, meaning "Juno the purifier "or "the chaste Juno," was celebrated on February 13-14." -- Wikipedia (Valentine's Day > Attested Traditions)
No, we don't celebrate any holidays. No birthdays, no Christmas, you get the idea. No

According to Wikipedia:

"Though popular modern sources link unspecified Greco-Roman February holidays alleged to be devoted to fertility and love to St Valentine's Day [...] Earlier links as described above were focused on sacrifice rather than romantic love.

In the ancient Athenian calendar the period between mid-January and mid-February was the month of Gamelion, dedicated to the sacred marriage of Zeus and Hera. in Ancient Rome, Lupercalia, observed February13 through 15, was an archaic rite connected to fertility. Lupercalia was a festival local to the city of Rome. The more general Festival of Juno Februa, meaning "Juno the purifier "or "the chaste Juno," was celebrated on February 13-14." -- Wikipedia (Valentine's Day > Attested Traditions)