I have a moutain bike, but most of it's use is on road (commuting to work).

I definitely want to spend more time on the trails, but I have a few lame excuses that are currently my mental block:

1 - not enough time on the weekends
2 - i have to bike through 15 miles of idiots to get to the trails (seriously - most of it is following a recreational path along a river that attracts half the city - and all the people that don't know how to share the path - it gets dangerous with the kids running out into the path - I've seen some nasty collisions)
3 - I need to get a trail pass (easy to get, but annoying to do)
4 - I don't have the skills I'd like to have
5 - fear of the sharp rocks causing flat tires (sure, I'll have people with me that can deal with the flat... but it still worries me as I bike on the trails)
6 - the last time I fell on a trail was directly into a very healthy patch of poision ivy - I don't get along well with that plant, and I'm not too interested in having that happen again.


So really, #4 is the only serious reason. From my bike commuting this summer, I feel more comfortable handling my bike, so I'd be more willing to go play on the trails now than I was at the begining of the summer.