It sounds like you are transphobic and do not want to have sex with trans-women. Is that correct and if so... why?
Well for starters, I'll take it that you have very little in the way of any social, interpersonal or (consensual) relationship experience, or else you wouldn't have asked that question to begin with:
You may not know this, but a huge factor which plays into people's decisions to marry or enter a relationship is the possibility of having children. Typically, a person who has had sexual reassignment surgery is not able to have children, or a pre-op person who "identifies" as the opposite sex, but still has the physical genitals of the same sex (and is still legally recognized as their birth sex) would not be able to have children with their partner (in the case of women) without a sperm donation. Or in the case of men, it would be entirely impossible to have children of one's own.
Second, given that physical sex is genetic and biological rather than "rational", the components which create physical attraction or chemistry between people simply may not be there if their physical sex and genetics are not that of the sex that the other party is typically attracted to.
Also the well-documented comorbidity of identifying as transgender with severe mental illness, high suicide rates, and other mental or developmental disorders which create symptoms of gender dysphoria would be things a potential partner would take into account, and statistics estimating that transgenders are less than 0.01% of the population, it simply may be rare for people to be able to relate to their rather idiosyncratic existences.
So if you're inclined to continue to be transphobic, misogynistic, and creepy, I'd very nicely suggest that you do it someone else now - or just go back to watching trash tv like Big Brother and killing off what little remains of your brain cells, okay sportie? Or do you need us to go over the birds and the bees with you again?