You need sex in order to procreate. Then your off-spring grow up and eventually die, just like you will.  This house is about the entre cycle of life, from beginning to end and beyond.   The first half of life is totally dominated by sex.  Even if you are not one of those people with a strong libido, it still controls so much of how you live your life.  

Then, in the second half of life, you have to face the fact that you will not live forever.  The idea of death takes over as the dominating force.  As we get older and older, we are forced to realize that we have to give up all those things we worked so hard to obtain through our second house efforts.  Now, we have to let go of all that.  In fact, we have to let go of life itself.  And all of the things we leave behind will be taken over by our heirs...thus the concept of other people's money comes into the picture.

Most of us probably won't inherit big bunches of money,  but the eight house influence of other people's money extends far beyond that.  There are many ways we can be involved in other people's money.  You could inherit it or have a partner who has lots of it or get some of your partner's money through divorce. Or you could be handling it for someone else.  There are plenty of jobs that deal with managing it for those who have so much they don't know what to do with it all.  There's jobs like financial manager, stock broker, accountant...all of which put the people who do them in touch with other people's money. 

The eighth house is also considered to be a very psychic house, deeply connected to the other side.  When death comes to you, it may or may not be an easy transition.  In today's world there is plenty of violence and painful illness to help us get there.  It is my belief that whatever energy surrounds your last moments creates a ripple effect that continues to touch not only those around you but your own spirit as it continues on in the next plane. 

At some point, you may be the recipient of other people's money, but eventually you will be giving it back.  The lesson is to use whatever you get this way wisely so that you have something worthwhile to give back.