It can be boring for those who have few interests in life. I quit my job at 28 years old, I had a job with travel to different cities, trade, I worked for myself. And when I started investing in stocks 20 years ago, I quit my job. This morning I am walking to my garden; for me, working in the garden is an interesting outdoor activity. I don’t yet know what I’ll do after lunch, there are a lot of interesting things in this world.
You're one of the lucky ones although luck is often just a word that defines *hard work, effort, good decisions, persistence and discipline and other such things. Anyway, good for you quitting your job and spending your life as you choose.