Consider, for example, Hearthborn Battler, Zoraline, Cosmos Caller, and Pond Prophet
To keep ahead in the prize race, your stream of attackers must give up fewer prize cards than your opponents when knocked outor must avoid being knocked out so that they dont give up prize cards in the first place
Leyline of Hope Lifegain payoffs and anthem effects are oversaturated, and not every lifegain deck even cares about pumping its creatures
They're in it for the love of Pokmon and the love of collecting, and the joy they really get about completing a set that they're working on or getting a new card they've been really, really excited about, and not about like, was I able to get a card for $10 and flip it and make $20? In fact, it wasnt until recently that Coop was able to start making any real money from the venture
Calix, Guided by Fate and Hallowed Haunting are interesting cards that get better the more enchantments you play, and that naturally includes enchantment creatures