I made a small purchase last week at the Apple store. A new MacBook Pro to replace my very old Macbook. with. It's only my second laptop in 5 years yet I know of developers that change their equipment yearly.
In fact all my technology purchases are extremely sporadic for a software developer. I haven't had a new laptop since 2008 and my first iPad was a third generation iPad. It has taken me until the iPhone 5 to own an actual iPhone. Needless to say I like to wait until technology pans out before I decide to make a purchase. I'm always late to the party.
Being late in adopting technology is no bad thing though. The first version of any new piece of technology is never the finished design. It's always the second generation version that is a more complete and feature rich product. The initial bugs and chinks have been ironed out and there's always some slight improvements elsewhere in the product.
Being a late adopter means that while I might not have the latest cutting edge equipment, I am banking on getting more value for my money with a second or even third generation product. Sometimes it pays to wait a bit.