The law is not on your side. I doubt that the authorities are going hunt you down for a few harmless sit-n-goes, but you never know. I've been pulled over for diving suspiciously under the speed limit before and subjected to a car search, so all bets are off if you ask me.
For the sake of argument, lets say the cops never actively go after your Internet gambling. If you advance in your poker career and start making more money, that cash flow could be traced. If you do well enough, you will be forced into deceiving the IRS in order to keep the illusion of lawfulness. The police may not actively investigate you, but the IRS will.
That is a concern of the of the high rollers, so let's say that doesn't affect you yet. How about this scenario: The site in which your money is invested may accidentally or maliciously lose your data. This doesn't have to happen at the PokerStars level, all the in betweens (GatorPay, Netellter, ect.) have fallible systems as well. As you are outside the law, there is no one you can turn to for fair play. Where is the Better Business Bureau when you need it? What are you going to do? Sue? You are technically a criminal.
I'm not being over dramatic, this has happened to me. As I've said before, I don't want you to quit playing on-line poker. I consider it a health protest to keep playing. My goal is merely to spread awareness of why it is important to usher Obama's "change" to our level.
Instruction as to how shall follow. Thanks for listening.