doing 1 LL vs. 2

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obviously the 'safest' way to get a maximum lengthening is by doing 2 surgeries so each segment is lengthed to a lesser degree.
however, i wonder, putting aside factors like money / time spent - if someone plans on making it 2 operations, what are the chances that following one LL experience he would want to go through another?
I think planning on doing like 4cm on femur, in thinking that the rest will be on tibia sometime later, may be reasonable but then u might get fed up with the ordeal after one experience, and then youre  stuck with 4 cm, which may be a decent amount, but then again you could have pushed it to another 3-4cm...
So im thinking if planning this (2 LLs) has any grasp in reality.
I realize that there are a bounch that have done 2 LLs. but from what i gather, most people that have done 1 LL do not wish to ever go through this again, regardless of how cm theyve gained....

thanks for any insight

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thanks!

Yes i realize there arent many who did 2 segments.  let alone finding them here...
however im still interested in those who did 1 LL, regarding whether their original plans or way of thinking changed dramatically in retrospective...