Of course it is. You've just got to find the right stimuli, right depth, and thickness. We've all got just the right nerve endings and pressure sensors for anal pleasure, it's just a question of taking one's time finding out, and being kind to oneself. Giving yourself up to lust immediately is a bad idea, relaxation and patience is the key. Different occasions also yield different pleasure results as well.
I tend to avoid receiving anal sex from a partner as it's extremely difficult to get across to him / her just what you need at a particular moment in time.
But help yourself, it's a whole world of sexual delight which must be explored
Oh