I find the ones on roundabouts near me insulting, instead of being on the road and having right of way, you now have to sprint across two lanes of traffic without any right of way. - more dangerous!

Most of the rest are just wide pavements. Technically segregated, but you have to give way on every side road (when your not manoeuvrering around entire families) - technically safer, but not nice to use.

The rest are just short and spit you back out onto the road without and protection or markings.

London has some good ones though.