As I see it in our congregation they are a bunch of good, sincere guys trying to their best. Only one in his 30's, two over 60, the rest in between. Most of them have either got health problems themselves or serious family health problems. Most have full time jobs, homes to look after and families to care for.
My husband came off being an elder for a while and during that time, as he had no 'elder's duties' to perform he was actually able to spend more time with the brothers and sisters, talking to them after the meeting rather than being in constant 'elder's meetings'. He was able to help them more. However he saw the other elders struggling with all the stuff they had to do and felt bad about it. So he went back to it and once more is in the merry-go-round (or as I call it 'in the hamster wheel') of endless things to do with no time left for anyone or anything else.
Sometimes I wish we could just have a full time pastor, paid to care for the 'flock'. I don't know if it would work better, who knows.