Monster to Spell/Trap Ratio

Generally, decks tend to have more Spell/Trap Cards than Monsters. This is mainly based on the reasoning that you can really only play one Monster from your hand per turn, and it's beneficial to get more cards that you can use (Spells/Traps).

A top tier deck that has (many) more Monsters than Spell/Trap Cards is Lightsworn. For one, some of the Monsters act as Spells/Traps, like Honest in the hand and Necro Garnda in the Graveyard. The more obvious reason is that Lightsworn players like to mill more Monsters than Spells/Traps, which should make sense.

For me, in most of my decks, I like to have slightly more Monsters than Spells/Traps. This is because my decks' engines are usually Monster-based and an all-Monster hand would be better than a no-Monster hand.

Of course, as shown, it depends on the deck. For instance, Gadgets obviously wouldn't want to play too many Monsters, since the Gadgets themselves almost guarantee that you won't run out of Monsters to play.

What does this have to do with anything? Not much. It's an interesting perspective on deck building, though.