A few more things you'd have to live without, besides the bike:
- analgesics
- antibiotics (you think just because you kill it in the woods it'll be guaranteed germ free? think again)
- modern surgery to fix those bones that break when you fall of the horse
- narcotics to put you under and the vital sign monitoring equipment
- insulin (maybe you or your family need it, maybe you don't...)
- a phone to call the doctor with
- the internets, obviously
- weather forecasts
- reliable, modern food preservation
- reliably clean drinking water
- toilet paper
- if you can actually swing toilet paper, it won't be soft.
- Preparation H. See above.
- electric razors
- virtually all modern cleaning products and antiseptics
- central heating
- sewing machines. You wanna wear it, you gotta needle
every last stitch.
- also, that needle will be made from bone or some soft metal. no steel for you.
- no cast iron either.
- you want nails, you find something anvil-ish and start swinging that hammer
Also, many things that aren't exactly high-tech but aren't avilable everywhere.
Like cheap rubber for rubber boots and raincoats,
coffee, chocolate, citrus fruit, many spices, actual tea (rather than the herbal shit), tobacco. Transport is cheap because of high tech solutions. Never mind agriculture.
Oh, also, no agriculture? Ever wondered what got the neolithic revolution started in the first place? The desire to settle down to make...beer. Yep, no beer. Also, distilling or winemaking will be out. If you hole up for the winter, you might be able to make some form of fruit schnapps with ice-distillation.
And if you live far from the sea, enjoy your iodine deficiency (even when you can get iodine infused foodstuffs of all sorts, not to mention supplements, many people in the industrialized world today don't get enough iodine).
Now, don't get me wrong. You can do a lot of amazing stuff with fairly simple aplications of technology.
But as romantic as the idea of living like they did a thousand years ago, I personally wouldn't like a 30 year life expectancy and pre-historic infant mortality rate.
Life was brutal, short and painful. It's easy to fantasize about it from the comfort of a centrally heated, electrically lit, fairly fire-proof and most of all, above ground and dry abode.
Technology makes our lives better. We, as a species, just have lost the plot along the way and don't generally use it wisely or just stop to think "do I need it? do I even want it?", never minding preferring durable goods to disposable crap. Modern technology can make many of the simpler things basically indestructable. But does anyone care? No, because we want this years style. I blame
Edward Bernays.
If there were absolutely anything to be afraid of, don't you think I would have worn pants?
I said I have a big stick.