No worries mate
I remember some years ago I joined the QC club, really - 'just to see what it was like'. I never looked back. I fully recommend it. I saw it at the time as an investment, because I was flying separate leisure and business flights, both within about a week of each other, so I wanted to try the lounge access. Now, it's an integral part of my business / leisure trips. I need it to keep in touch with home + family (in case anything goes wrong) and it provides a useful calling point for business, work, or just kicking back and watching TV with a drink.
Once you go in it, you will love it. If you do enough business trips a year to get gold / platinum status, you get complimentary membership, but even if you just do a few long haul a year, it is still worth it. Every time I go overseas, I take a business colleague or my fiancee in, and they like it too. If I go with my fiancee, she gets the lounge access too, and that means that we don't have to fork out for a partner QC membership, because she is technically 'my guest'.
You don't just get the lounge access, you get the priority check-in (which, on some days, has saved my behind and/or my sanity) - meaning, waltz up to the business / QC counter and check in, instead of waiting in the 3km long queue at economy on a public holiday. You also get priority baggage handling, and so, your luggage (is meant to) come off the carousel first. I say this because Adelaide domestic has a bad habit of not doing this with mine. But usually it does come off first (before everyone else's).
I have rellies in Europe, and so I go back to visit them about every 1-2 years, plus a few friends in the states too and Asia. Couple that with a few business trips and you're looking at 3-4 good, long trips overseas (either business or pleasure) a year, plus God knows however many domestic flights. I have one flight to LA soon, doing business there, plus NYC, back through Europe on a RTW fare, plus (potentially) a wedding to go to in Thailand and one in NYC.
Business class is nice - but the beauty of flights is that....if you can get the business you work for to pay for it, it's even better !

Now that, is the whole art. Getting someone else (usually work) to pay for business trips, then using those frequent flyer points for your own personal holidays + upgrades.
