UNIRONICALLY now, there's NO downsides in HRT. You get:
>smoother and softer skin - feels nice but also is of an immense help against ageing
>healthier fat distribution - lets you live longer
>decreased libido - self-explanatory, less time spent thinking about sex = more productive = healthier lifestyle
>less muscle cramps and healthier digestive system - reduced risk of cancer + less risk of developing various gastrointestinal troubles on top of always feeling fit
>improved mental health - proven to make you less anxious and promote a more positive outlook on life
>titties - self-explanatory, who doesn't want an extra erogenous zone you and others can play with?
>thicker and fuller hair - instead of balding, you'll have a luscious mane and will literally never have to worry about hair loss until your late 80s
>rational thinking - less testosterone means less impulse and less random emotional outbursts, you grow wiser as consequence
And so many more. Downsides? You gotta pay for it, and... Yeah that's it, you just gotta pay for it.
So what are you guys waiting for? Get your estradiol now and make sure you buy anti-androgen as well!