If you got what cover your expenses, do you still go to work? Or start to think to retire and have fun in live?

Your question implies that you do not have fun at work, or that simply you do not enjoy your work.

This is NOT the case with me.  I personally enjoy my work and have fun while doing it. 

I have been working for more than30 years now, and it is NOT a matter of money any  more.  I have earned enough and made some good savings and I have my own small wealth (if you like to say that) from my work and while I still enjoy my work .

Today, it is NOT a matter of money at all to me.  I work now and enjoy my work even more because I work for my own self actualization. I wish you all the best !!

Yes, I will keep working I do agree with Mr. Thiab, and in addition I would like to say that 

THERE IS NO GUARANTEE THAT MONEY WOULD LAST LONG BUT IF YOU WORK THERE IS GUARANTEE THAT YOU WILL HAVE MONEY LAST LONG !