ENTP's deal with a lot of insecurities from within as a result of their extraverted intuition, which without any sort of rails can be very humbling from their perspective. It is impossible to keep up with their extraverted intuition and they have a hard time living their life the way they feel they should. As a result however they make a lot of effort to be the best at Ne they can be. And Ne is very inclusive, so any and all people they care about, they will show it in more ways than you could possibly imagine. They are engaging, warm, smart, witty and remarkably helpful.
Especially in more immature ENTP's, there is a fragility to them that people like to relate to as well, of course the healthier and more mature an ENTP gets, the less this can be seen. They wear themselves on their sleeves and value a variety of likable ideals far more greatly than the average person.
The more unhealthy ENTP's often seem to try and control or rail in their Ne too much, rather then letting it run its course and just try and keep up. These ENTP's usually experience a stifling lifestyle as a result of that, their world feels small and their ability to move around in it is severely strained.
But the healthy ones are always fun to be around.