Do I want an American Express Gold Card? I pay off my balances every month, and have for over seven years. Right now I have a blue card that pays me cash back, and an Amazon card I use for Amazon purchases. I rarely use cash, and spend about $30,000 a year on my credit cards, including ten or so round-trip plane tickets a year and some business expenses. I make a comfortable income, but am not rich by any stretch. AmEx wants to promote me to a gold card, free for the first year, $90/year afterwards. They've been mailing me monthly with this offer. Are the benefi