Should we "invest" in people like stock markets ?

Hello little darling,

How's my little princess doing tonight? Daddy's life is currently at a standstill. He doesn't know where to go, what to do. But earlier, it was kind of very tumultuous and confusing. Now, it is more peaceful. Nothing has changed on the outside but inside its quiet and calm. I just watch books and movies all day. Leaves me with a lot of time to spare. I had this one thought creeping up my mind.

Should we spend our time and energy on people like stock markets?

There are quite a few similarities and also dissimilarities between people and stocks. Let's put the similarities first.

1. People just like stocks are quite unreliable. Human mood and mind are subject to some real quick changes not unlike the stock market.
2. Everybody wants to get associated with the uprising hotshot people or stocks. Nobody cares when it is falling or failing. 
3. You have limited time/energy or money, so we should choose wisely. Great investments can yield great returns and vice versa.
4. You have different types of friends, just like different kinds of stocks in different sectors. You have work friends, college friends, school friends, neighbour friends. 

Now, for the dissimilarities. 

1.  Investing in stocks in optional. But almost everyone needs friends to live.
2.  Emotional losses are more significant than monetary ones.

You spend your time and energy on a person, you enjoy the companionship. You expect warmth and support in return. Similarly, you invest in stocks and expect a return. In financial markets, there's a very common saying. 

Don't put all your eggs in one basket.

That is, invest in many stocks to minimize the risk of loss. In case of people, however, the advice is completely opposite.

Have a few close friends. That's all we need. 

But, what if it is better to invest a little time and energy in quite a lot of friends, just like the stock markets. Investing in one person has huge rewards, but if the person leaves, it has a disastrous aftermath. But continued investment in one person minimizes the chance of risk to some extent. More on this later.

Bye for now, sweetheart.

Yours always,
Dad