I mean, there is no meaning in nature, it was man who invented it, and often it appeared because of a scarcity, for example, the point is in a beautiful woman, because you are unlikely to find another one as beautiful, right?, or can you find a person who will support you and accept you as you are, like your loved ones? The examples are not the best, but I hope you get the idea.
In addition, I will say that about a year ago I watched the film "The Seventh Seal", and now sometimes I feel in the place of a character named Antonius Block. I dismissed the inevitable by refraining from suicide as a teenager, thinking I could find the meaning of life, but what was to be expected, nothing worked out. But especially now, how shall I put it... in the age of AI, it is impossible to escape the truth, self-deception no longer works, at least for me personally.
Chess Game with Death:
what you are describing is the economic situation.
on the free market, the thing that is profitable is always the thing that there should be more of (according to market pressures). this is universally true across all branches of economy. if you open up a company that sells shoes, and nobody else has any shoes, then you can sell your product at a high profit margin. but if there are already 2 million shoes for 1 million people, then you will have a difficult time selling yours as well, so it's not profitable for you at all.
the same happens with the "beautiful woman" example that you cited. the reason why you think that you have to be with her now, urgently, is because there is too few of them. so there should be more of them, and that's why it's profitable to strive to be with them, if you get what i mean. in a certain sense, by doing so, you are in fact helping to make sure that there will be more like her in the future, because by striving to be with her, you are increasing the average number of children that she is going to have.
so, you can look at things through the free market perspective, which is largely equivalent to yours, but has the added benefit that there are a lot of clever people having developed very useful tools to analyze it in the past.