What got me to use nice notebooks with abandon was switching to fountain pens, which require thicker paper not to bleed, and I did that because I'm left-handed and was tired of all the problems that come with that.
Some problems left-handers need to deal with:
* smearing,
* awkward hand positions to avoid smearing,
* needing to press harder to get lines,
* ripping paper because I'm pushing instead of pulling the pen to write, and
* pens unscrewing themselves, leading to cracking and thread stripping
Some problems left-handers need to deal with: