I would miss how easily I connect with family and friends, sharing updates daily. So much happens in between phone calls and seeing each other in person, and facebook keeps us that much closer. I'm a bit of a hermit, and the internet gives me a more active social life.
INFORMATION AND EDUCATION
Whenever I run across something that I don't know, such as a definition, name, place, time, etc., I use google to find the answer. Google Earth allows me to get a real life visual of anyplace in the world, and I would really miss that if I couldn't access it anymore. I also use the internet to verify information in my writing. It is such an unlimited pool of information, and I would likely go crazy if I couldn't use the internet to find answers so quickly. Nowadays, we can even earn credits toward a degree online!
The internet also has an unlimited resource of visual elements useful for any type of creative endeavor.
I would miss the ability to be aware of happenings world-wide and locally, things that the newspaper and tv news normally wouldn't cover.
BANKING AND SHOPPING
Anything I want, anything at all, I can find and purchase online. I can even have a wishlist on amazon to remember what I want when funds allow. I also love looking at houses (the best part of being a Realtor), and the internet allows me to have a virtual tour of any house on the market, anywhere in the world.
I love how I can use blogs, hubpages, and even build my own websites to share my written works with the world.