When you really think about it, an elder is more of a mouthpiece than an instructor. He does nothing more than to read what has already been written for him by the WTS. The fact that a wife has to take over the few responsibilities placed upon him only reflects just how flawed the organization is.
It's no wonder that children of elders are usually the ones that leave the organization first. They see what these elders are really like after the WT study. The majority of these 'men' barely have a job to sustain themselves, much less their families. A man without the intellectual capacity to earn a decent living cannot possibly have the capacity to deal with more serious topics such as the meaning of life.
I've known many so-called 'elders' who do nothing more with themeselves than to work as doormen in midtown Manhattan. But as soon as bible study night comes around - they put on their $100 suit and now they think they know more than you do. Once they step on that podium, they know how to run a household.
The next time you go to a meeting and an elder asks you about yourself. Tell them that you're a lawyer, a doctor, or even just a computer technician and watch the expression on his face change from interest to disdain. But tell him that you just did time in prison or that you're unemployed and watch his face light up. Why? Because now this doorman thinks he's better than you and he can't wait to come to your house to show you just how much he knows. If you're married it will be even worse because he'll do his best to let your wife know just how worthless you are for not being in the 'truth', in a $100 suit, reciting a talk written by someone else.
An elder might be able to fool the audience with a well written talk, but he can't fool the family that follows him home after the meeting.