Hi Aaron,
I have family members who had died from cancer too (bowel and breast cancer), but I never make my decision on the meds I take based on that fact.
I too was scared to take Humira, in fact I put off taking it for over a year. That was until I was in a Crohn's Disease flare from hell - couldnt even keep water in. I did manage to stay out of hospital by upping the pred and pushing fluids (silly really I just should have went to hospital ) Then I knew that the pred and MTX were not enough and begged for the Humira.
I was once too scared to take it until I became too scared not to It has been a good decision, as it works great for my Crohn's and is now starting to kick in for my AS.
This is my own personal account, so what works for one may not work for another.
I just want quality of life, which I feel I am getting from the Humira at present. Whatever comes down the track I will deal with then.
Good luck with your med decisions and keep posting.
Jo