jerk.

Forces you to play on occasions

Huh?

This is why they make us pay. Show me a free MMO that does this.

Yes. Given the expense of creating the game, maintaining the customer service system (in-game, phone and email) and creating new content, the only way for a company to justify these expenses is with a monthly subscription fee. However, when you look at the monthly fee (usually $10-$16USD) that a player pays to access the content almost 24x7, there are few entertainment values that can top that. Basically, for the price of one movie ticket in NYC, a small soda and a small cup of popcorn you have access to an ever-changing and growing world on demand (minus short downtimes for server or software upgrades).