Aatos, 

it's funny because I've been talking to a Finish guy regularly, we usually speak once or twice a week, sometimes for three straight hours. And I also have another regular partner, but besides that all the rest comes and goes. I agree that there is a lack of commitment but also what happens is that sometimes there is no chemistry or compatibility, and when the person is not actively studying and bringing it's doubts do be discussed at some point we end up don't having much to say or not really interested in talking to that person. So yeah, it takes a while to find someone that 'clicks' with you to keep it as a regular partner and at the same time that is committed.

Good evening!

Yes, it's very common and familiar situation.

I can to add: I can't understand (and to perceive) how it's possible - just "practice language skills", without discussions of common interests, experience ets'. 

People very often consider the "practice of language" as a question and answers, without real personal interest. Como exam of language in university. As machines for "conversation".

Often all this doesn't make any sense. There are a lot of websites with automatic microphones and programs-helpers, if someone needs "language practice", and not "in human communication in different languages". 

Just my observation. And view point. Excuse me, if it was not in a  "right yard" :-}

Wish the pleasant evening to everyone! (we have in Russia a night already :-}   )