On the subject of people giving up through boredom...
The Royal New Zealand Aero Club runs
this scheme in their country which gives qualified pilots something more to aim for.
Quite a good idea for those who want some sort of structure to operate within.
Another approach is simply to scan the magazines and web sites such as this for places and events which appeal and then go along to those. Or set yourself some personal goals such as visiting a certain number of new airfields in a year / flying to a foreign country / flying a new type / doing your IMC etc., etc.
Just going for a potter around in the air can be great, but extending yourself a little is probably the key to avoiding boredom.