New 'ish

Just when I thought I had the latest, newest, freshest, crispiest apple, they go and make some NEW iMACS. I can't keep up with Adobe either. I am still using CS2. As soon as I switch to 4, there going to release 5. How much does it mean to have the latest computer/software, etc... as long as you get jobs done? I know there's all kinds of innovations with work flow and such, but companies update so quick, making everything so obsolete... it's like running behind a train and never getting on board...