Basically its a big scam designed to fleece you of more money.
The "scheme" is not opt in, it is forced on you
You can only opt out after they have taken the first payment and you have only a month to do it
You can opt out, but they automatically put you back in
You get charged a fee by the company handling the "scheme"
If you fail to pay a debt, the court can order you to relinquish what has been paid in, so you don't get it (although it has been through the courts, the decision is being challenged by big business AGAIN)
If like me you aren't going to live long enough to see retirement, its a big waste of time
If you scrimp and save, eventually the government will declare that your pension is too big and you will lose state pension
You are forced into it, meaning if you already have a pension, this is an extra burden
If you are already on low income, the final outcome will be meaningless anyway
You will lose enhanced or "fixed" protection
Employers will withhold pay rises to pay for this new tax
The last pensions revolution ended up earning an whopping £1000 above what was paid in
However, perhaps the biggest problem with auto-enrolment relates to how it interacts with state benefits. At the moment, for every pound of "excess income" someone receives, they lose 65p of housing benefit. For council tax benefit, the reduction is 20p for every pound.
The fact that this is a state run ponzi scheme doesn't help its credibility either.