I recently discovered that I signed up for a casino without thoroughly reading its terms and conditions agreement. But of course this was entirely my fault even that I am still bothered by the withdrawal requirements on deposits. It is well known that deposit bonuses or any bonus offered by a casino will have wagering requirements that goes to x50 or more. What truly concerns me is the 5X wagering requirement on normal deposits without any bonus in order to withdraw the initial deposit or winnings.
To clarify things better here is an example : if you were to deposit $1000 and win $200 in your first few games then you wouldnt be able to withdraw your winnings or even your deposits without wagering at least $5000. This means that 80% of the time, you would lose your money before reaching the required amount.
In my opinion this term is unfair. I am not attacking any specific casino, but I do believe that if users were aware of these requirements they would be less likely to deposit their money in such casinos since there are other casinos without such stringent requirements.
There are many shady "casino's" out that aim to lure people in, often using super size welcome bonuses with extreme terms that are almost impossible to achieve like you stated. They can offer a 1000 dollar new user bonus but require you to wager it a thousand times to unlock it - clearly you will lose any potential withdrawal in that time. You're better off being either a) very clear on the welcome bonus terms, as they are often open about them but few people read the detail or b) sticking with the biggest existing casino's you can find many places, including here.