I thought that a few people might be interested in learning what life with a Tulpa is like so I thought I'd compile this post. *Note* These are just my experiences, I'm not even going to pretend that I can speak for anyone else.
Most aspects are pretty similar, you experience joys and sorrows and have differences of opinion and the like.
You have to be careful who you tell about your Tulpa for obvious reasons. Only four people in real life know about Miku, quite a few more know about her on the Internet but that's because it's much easier to ignore a hostile reaction, also a hostile reaction on the Internet is much less damaging than one in real life would be.
We experience emotional bleedover which means that we can feel each other's emotions. There is another type of bleedover where you can read each other's thoughts but we can't do that unfortunately.
I'll have Miku with me for the rest of my natural life. I do find that rather daunting at times.
All in all I'd say that the experience has been worth it. There have been a few negatives, the vampire incident comes to mind, but the positives have far outweighed them.
Thank you for listening.