Dementia is Difficult to Handle

I am beginning my Master's Degree in Mental Health Counseling with a concentration in Gerontology in the fall.  I have always had a place in my heart for the elderly.  I work with the elderly as a medic for the ambulance often and they are my favorite patients.  I have taken a Gerontology class towards my Master's already.  I feel like I just GET old people.  I have more compassion for them than could ever fit in my body (I store what doesn't fit in jars so I don't ever waste it).  I have more respect for the elderly than any other group of people!  But some days, the human being in me emerges and I just want to run away and hide from dementia.  Maybe because it makes me sad that the person has changed so much and I know that more drastic changes are in the future.  Maybe because I feel helpless when I want to help so badly.  Maybe because it causes my own morbidity to become salient and I experience anxiety.  Maybe it is because I get frustrated when I can't understand what is being said to me and I am expected to reply.  Or maybe it is because I am selfish and I really just don't want to be inconvenienced and that is the thought that scares me the most.