Maybe, maybe not. It depends on various factors like:

1. Are you able to achieve elite status with your travel patterns?

2. Is Admirals Club access important to you when flying domestically?

3. Is being upgraded on AA flights important to you?

4. What are your likely award redemptions? (Route? Class of service?)

I think that AAdvantage miles are usually more valuable than the miles offered by other programs in most -- but not all -- situations. But if you'd like Admirals Club access when flying Coach domestically, you won't get that with AAdvantage status, but will get it with mid-tier elite status in foreign oneworld programs.