A tell tale sign that you have an inferior product or service is if I can't easily cancel my membership.
To the contrary, I am most confident working with the companies that always inform me of the exit. It's almost as if they are always looking out for my best interest. Go figure!
At the end of the day, an unhappy customer is not worth the minimal amount of money that you are receiving from locking them in. If you are truly building a respectable business, you'd be thinking of the long-term and establishing trust, loyalty, and a lifetime relationship with your customers.
The next subscription service or membership that I succumb to better inform me of the opt-out process before I commit. It has become so important to me lately.