Like you, I dont like the self service checkpouts, however I think we are gradually being forced to use them.
In my local Sainsburys the queues on the "normal" tills seem longer (probaby less staff) so it encourages you to use the self service tills.
In my local B&Q the had nobody on the "normal" tills, almost forcing you to use the self service tills.
And my local Tesco, on the normal tills, they now expect you to put your card in the machine yourself (most do this now) AND take your own receipt.
Not long I think when it will seem normal to do you own checkout (like filling up with petrol, I can rememebr when a person came out and filled the car up with petrol for you)