How can I, a 69-year-old woman, end my relationship with a generally good 63-year-old man?

My boyfriend and I started dating last May after meeting on a dating site, which might be relevant. Initially, I noticed some differences in our viewpoints but didn’t dwell on them too much. However, as time passed, these differences became more pronounced. I identify as a liberal Democratic Socialist, am an atheist, and have a broad view of the world. In contrast, he holds more conservative views and has become increasingly intolerant, with his political and social beliefs clashing with mine. His religious convictions have also become stricter. He tends to be gullible when it comes to conspiracy theories, yet he dismisses current news. Despite this, he is a decent person, and I’ve certainly dated worse in the past. When I joined the dating site a couple of years after my husband passed away, I hoped to find someone with shared beliefs and interests who would enjoy spending time together and being activists for causes that matter to us both. Instead, our relationship consists mainly of sex, conversation, and more sex, followed by my returning home. While I appreciate the physical aspect, I wish we were compatible in other ways as well. He wouldn’t attend a Pride event or protest deportations with me, which highlights our opposing views, and he wouldn’t even join me for activities like rock hunting or foraging. I can’t shake the feeling that I’m squandering my limited free time. I know this sounds harsh, but I’m not in love with him, and he has made it clear he doesn’t love me either—he just claims to need me. I’ve never experienced loneliness; I’m comfortable being alone. I hope I don’t come across as heartless. I simply want to spend my free time on activities I enjoy. I want to be as gentle as possible when ending the relationship and would appreciate any advice on how to approach this kindly.