this is an unusual poll and i'm very interested in everybody's responses, i can kinda see both sides, i mean if therapy is that important to you to get you through daily life, of course the thought of it ending would upset you, but like was mentioned, you can be 100% invested in the process without transferring that need onto a therapist (this is just from my brief therapy sessions) i found that although the T may have solutions to your problems they also have to remember that it's up to the patient to decide how much to reveal, what they take on board and how much dependence they foster, a good T should know this and be very aware of it and apply the correct actions and responses, but therapeutic styles vary, i personally was going through Gastalt therapy which put a lot of the responsibility on my own actions and decisions, i think that was good for me given my somewhat analytical nature, i think the T was wise in her decision to apply that type of therapy for me, never once did i feel a "power" struggle, i kind of think the word power here is incorrect, i think it depends on the individual patient, therapist and type of therapy, and im sure the reasons for the therapy are intertwined with the end result,

so i guess, yes a T can have "power" but only if you give it up to them, a client can have the power to completely ignore all directives and end therapy any time they choose.
That's just my take on what i experienced, we are all different so take my experience with a grain of salt and like most things in life its not a "one size fits all" question. Great thread tho, very enlightening.