I use the bridge pickup when I play using distortion or when I want a really snappy sound when playing with clean tones

Other than that I usually play in the middle or neck position and usually clean because I play a lot of softer stuff and like the warmer sound

I use my bridge for rhythm and neck pick up for soloing mainly. I only have a couple of guitars with 3 pick ups in them, one being a strat. I usually only buy guitars with a bridge and neck pick up as that's only what I normally use.
For example:
Jim Root Tele
J5 Tele
HH Strat
Those are my main guitars for playing.
However when recording its sometimes nice to have parameters that you wouldnt normally use to make a different sound. Thats why its cool to have a les paul Jnr with a P90 as you are forced to think of ifferent ways to make sounds as there is only one pick up, but then theres the strat where you can use individual pick ups or blend them together

I generally prefer the tone of the neck pickup on my strat. But for solos in my band, I'll mostly use the bridge pickup because it seems to cut through the mix a little better.

That sums it up fairly well for me, too... I seldom use the bridge pickup unless it's with a fuzz (or yes, fuzz wah!) that's just a little too woolly on the other pickups. I'd probably find more use for it if I played somewhere other than at home... without having to fit in with other instruments I can pursue whatever sound I like. The Strat I play the most has low-output mid '60s-style pickups and an old 3-way switch — there's no tone control available for the bridge pickup, so I probably overlook it sometimes due to a perceived lack of versatility.

When I use the ultra I play the bridge dual Lace Sensors all the time, as there are so many options available between the TBX half of the tone knob and the mini-toggle between the various combinations of the two pickups.

I think that some people have missed the point of my original post, I stated that a lot of people who demo guitars and riffs on "YouTube" use only the bridge pup and rarely use the other pups.

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'65 Strat,65 Mustang,65 Jaguar,4 more Strats,3 vintage Vox guitars,5 Vox amps,'69 Bassman with a '68 2-15 Bassman cab,36 guitars total-15asst'd amps total,2 vintage '60s Hammond organs & a myriad of effects-with a few rare vintage ones.

Perhpas it's the same thing in a way that I see a lot of bassists do on youtube when demoing basses. For some reason they always seem to be slapping it, as if it's the only way to play a bass. I get a little sick of hearing slap bass all the time. It's a being a show-off and having a lack of imagination, if you ask me.

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'08 Fender Am. Std. Jazz bass, maple fretboard, charcoal frost metallic finish
'10 Squier VM Jazz bass, maple fretboard, natural finish
Ampeg BA115
'09 MIM standard Strat, maple fretboard, sunburst finish
Fender Super Champ XD

For me it depends on the type of music and the guitar/amp/pedal combination. With overdrive, the bridge position on the Strat sounds like crap unless you turn the treble down to like 3. With my regular settings, the Strat's bridge pickup sounds to harsh, kinda like a wah all the way down. I like it for cleans though. And that surf sound! I really like the neck pickup and the bridge/mid combo on the Strat. Those are my two favorite strat tones. The middle pickup is alright, good for cleans and texas blues, and the neck/mid combo is good for soloing and is the best for cleans. On Telecasters, I like all the positions. Same with Gibsons.