Well a bit of science is called for here. Being "in love" only biologically can last for up to 3 years - no matter the gender. It's not possible for anybody to feel identical after several years of relationship. Being in love is a feeling encouraged by oxytocin surge, which is interpreted by our neurons as a deep sense of closeness, and gradually wears out for the most part after the initial year or two... up to about 3. Love, however, is not a feeling, it is an emotional disposition, the hormones just help foster and establish what we're supposed to build upon afterwards. But people are lazy and want to keep relying on the flesh. It's very difficult to keep anyone "in love" indefinitely because this is a feeling stirred up by pleasant hormonal sensations. There are also immature men who think after these initial feelings wear down, that the love is gone, and then they go chase that excitement that they used to have with their wife, and go cheating.
I believe education is in order. I read about psychology since I was a teenager, it helped me start forming proper ideas how does a healthy relationship look like, what is love, vs what is being in love. Unfortunately, parents or schools don't really talk about important subjects such as these. Then I became Christian, so my ideas expanded more, according to the teachings of Jesus. Then I met my husband, who also had a positive influence on me. I imagine I cannot be the only one who experienced spiritual growth over the years. Not all women live by chick flicks, a lot of us are interested into pursuing spiritual growth and giving love, not just taking. As incredible as this might seem to you.
To a point, I understand your concern. Nobody wants to be used and abused in a relationship, and love had definitely gone down the drain in these times. There are women out there that do have unrealistic expectations. I personally largely blame movie industry and romance novels where the man is elevated to a demigod status who solves all her problems. This is the root of the problem, imo. But you're crossing into paranoid worldview where you started to believe that emotionally mature women don't exist out there.
By all means, be extremely selective when dating. If you still believe that it is not worth the risk to try finding a person that will love you for you, and feel safer to stay single as a chaste Christian man, that's respectable. I respect and support rare MGTOW people who choose to dedicate themselves to healthy life and achieve personal happiness through meaningful activities outside of dating. However, most wallow in negativity, self righteousness and hatred and it's a very poisonous and evil brew which will indeed poison you if you choose to hang around such.