Tolerating homosexuals and their actions does not constitute celebrating them. You are entitled to your belief that the homosexual lifestyle is sinful and immoral, however narrow-minded and bigoted such a view may be, but just as forcing you to engage in homosexual intercourse would be wrong, so is the converse.
On another note, the prevalence of diseases amongst homosexuals is irrelevant to whether or not their lifestyles are "...right or wrong." Individuals that receive blood transfusions are more likely to contract HIV/AIDS than those that do not, and whites are more likely to be diagnosed with cystic fibrosis than those that are not white, but this does not mean that the lives or activities of individuals with either of these illnesses are inherently wrong.