To be poked or not to be poked, that is the question

Just got a jab in the arm for a diptheria/tetanus booster. Did you know there are 101 lovely diseases and afflictions one can acquire in a place like India? I didn't.
I mean, I was aware of the usual ones: malaria, traveller's diarrhea, Hep A, diptheria, tetanus, polio, typhoid... I thought I had them all covered, but then there is Hep B, the vaccination against which, according to my travel clinic advisor, is all-the-rage among travellers these days (?!) Hep B is body fluid/blood transmitted and does in your liver... possibly forever. sounds exciting. and of course there is the endearing Japanese Encephalitis, mozzi born, possibly resulting in brain damage or death. Vaccine for Japanese Encephalitis consists of 3 doses at $100cad each! double ouch. We can't forget Chikungunya Fever (pronounced: chicken goonya. I know, I was laughing too). This a new one on the scene I guess. I'd never heard of it in the 17 years I've been travelling, but also mosquito born, same symptoms as malaria. The recommendation is bug dope, long pants and sleeping under a Permethrin soaked mosquito net because no other protection exists apparently . ha, ha, ha.
All this information was not only overwhelming, but terrifying. Malaria or the possible side effects of anti-malarials alone is enough to cause you to never consider travelling to a tropical or developing country ever again in your life.
Upon my departure from the clinic, she gave me two things: the pocket sized bible of all the horrendous diseases you could contract and ... a mind full of fear. Thank you. Delightful lady though... and I didn't feel a thing, I'll give her that.
So armed with all this happy information and a sore arm I am now obliged to decide how high risk I am for each of these things and whether or not I am going to opt for the vaccine. I am not a highly paranoid person, so I tend not to worry all that much about every little thing that could befall you, but one has to wonder, and be smart.