What a great read! I came here to consider posting my own story, but it's so similar to yours it seems silly to do so.
Whilst I live in Brisbane, I also grew up loving Lego. The only other toys that vied for my attention were my Transformers and Mask toys.
I was also fortunate enough to have a great Technic car set, but for me it was the 8860-1: Car Chassis.
Like you, my first post-dark ages Lego set was the 8455 Technic Back Hoe. I loved it, even if it seemed very different to the Technic studded beams of my youth.
I also had a break for a time for work and study commitments, but am now back into Lego full-steam, having acquired a bunch of decent big sets, with Technic and Star Wars being my favourite themes. Thank goodness for ebay/bricklink to let guys like us catch up on some of the great sets that we missed out on.
Thanks for sharing your story, it's great to know us AFOLs aren't alone. :)
Oh and that Crumpler bag looks fantastic - well done!