I started out with the nikon 4500 too, and now have an entry level dslr. I daren't go along to my local photo club, I know where that will lead and I simply don't have the cash at the moment to support that kind of obsession (says she whose willpower crumbled regarding Greenbunion's 80-400 lens
...). My other constraint is time. Maybe when I'm retired I'll let loose properly!