Internet without Javascripts. Share experience.

Well, that's pretty simple: most websites break in minor ways. I've only seen a couple stupidly-designed websites that don't work at all without Javascript (because they use gratuitous Javascript to load stuff).

The biggest annoyance I have using LibreJS is not actually not having Javascript, but a bug in LibreJS that causes extra line breaks to be inserted into text entry fields when Javscript code is being blocked. Your mileage may vary, however; it depends on what sites you use. Just try it for a little while and see how it goes.

How are you think, switching to links2 is sheer madness or the quest may be successful?

It is best to use JavaScript on/off toggler such as NoScript. Most websites work fine without JavaScript other than reading comments or one-click download sites (other than 180upload or billionuploads).