Can't screw gate to concrete
Does the production of concrete not ad to this?
Yeh you get blowouts but they're still largely solid. (y)
If everyone thought like that then houses would be built of timber too, and happily rotting away in the British rain. Point is a timber one will eventually rot where it meets the ground. Repeat this for every timber post in your fence. And every panel joined to those posts. Every 5-10 years of so.
Also remember if trying to remove old fence posts with at least some of it still attached to the concrete base then you can use a car jack .... https://www.youtube.com/results?search_query=fence+post+removal+car+jack Wish I'd have known about that in 2007.