I certainly wouldn't worry over the fact that you don't care to be a slave or a 24/7 submissive. Not all Dom/mes even want or can handle that level of responsibility.

Many Dom/mes aren't always looking for significant experience either - many prefer training in a novice to suit both their individual preferences.

As others above me have stated, this lifestyle is all about finding what works for you and your partner. Partners can be found by chatting on sites like this, local munches, or (to mirror Tempscire's suggestion) the good old fashioned go-out-and-meet-someone-in-real-life-and-actually-get-to-know-them route. Sure, a site like this is great if you wanna pick a play partner, but it does get infinitely more tricky when looking for a life partner (if that's your goal). From personal experience, I have found far more folks that share my spectrum of interests in real life that also happen to be into BDSM than I have found kinky online or munch friends that have been interested in the "vanilla" sides of my personality. Yeah, I require a Lifestyle partner to be happy, but that's not all I want and that's just not the first question I want to ask when I come across a guy.

Don't give up yet - you may look and, sure, there's a chance you'll never find anyone that suits you. But if you stop looking you've just guaranteed you'll never fulfill your desire.