I'm a bit confused as to the wording of the second two options but i'm assuming they run in descending order of seriousness. Suppose i'm the middle option then applying that logic.

Getting into fell running was a natural progression for me, i always gravitate to the most extreme end of any sport i do, and it's an easy discepline to start taking seriously when you only found yourself there for the hell of it in the first place. Already i've spent nearly 200 quid on kit and that'll keep rising i suspect and i've started to kick myself for losing places due to unforced circumstances too...stroll on!