Did you create your own language? How far did you get?

Many people, at some time or another, want to make their own language. Since I doen’t know how else to format the questions that I have, I will just list them off.

Have you ever tried to create your own language?
Why/Why not?
Did you succeed?
How complex/complete was it?
Do you ever still use it?
What sort of grammer did it have? (describe)

For me, my answer would be:
1 yes
2 I thought it would be fun
3 no
4 not very, I only started working on the grammer
5 no
6 It had OSV sentence format, and it conjugated nouns as well as verbs
I hope you will have more to say than I did.