Daily Aspirin Regimen?

I am a very healthy 49 year old male , who still enjoys golf , biking , hiking , all sports. Last week I went for my yearly physical exam. The doctor came in and she said everything looks good. good shape , prostate very normal for a guy my age. BP 127 over 70 , excellent , I have the body of a 30 year old. Then 3 days later I get a call from her nurse regarding my labs. Total Cholesterol score 164 with the HDL a little low and Triglycerides 144. She went on to say that however the good lipids , the doctor did have a concern regarding the viscosity of my blood. She further stated that with the normal blood viscosity for a fellow my age is around 13.4 mine came in at 16.5 , not life threatening but shouldn't be blown off either. She recommended I start a daily aspirin regimen ( St. Joseph 81mg baby aspirin ) to thin my blood. Now I'm the kind of guy who does his homework , so I always research things to death. Every medical web site I've been to all say the same thing regarding daily aspirin therapy. Things such as , blood thinning can be every dangerous , some side effects can include stomach ulcers , easy bruising , and in some cases excessive blood thinning can lead to hemorrhagic brain aneurysm , and we only recommend daily aspirin regimen for people who have all ready had a heart attack and/or stroke to prevent a recurrence. So now I'm stumped. I'm the kind of person that usually avoids pharmaceuticals because , everything can have possible side effects , and in most cases it looks like the cure can be worse than the condition. Does anyone have any input ?