> but it is so annoying to have to change 'www' to 'old' every time I want to read something

There's an add-on to fix that! So whenever you click a reddit link you are automatically redirected to old.reddit.com.

I use the Firefox one, it works great:

https://addons.mozilla.org/en-US/firefox/addon/old-reddit-re...

https://github.com/tom-james-watson/old-reddit-redirect

Apparently there is also a chrome extension but I haven't tried it so user beware:

https://chrome.google.com/webstore/detail/old-reddit-redirec...