I rarely manually fly my space creations into space, nor do i manually land them, I let mechjeb handle that for most part.
I have 868 hours spent playing Kerbal space program since I bought the game some time ago. (I want to say around .17ish?)
I have never really played without mods, since downloading my first mod (mechjeb) (followed by tons of others)
I have no long lasting save files.. due to game breaking updates to some mods, which forced me to just restart my career.
I have used hyperedit on things I cannot seem to get to orbit (Ie too huge big to launch or would brake if launched normally (entire space station once/twice)) or for random things I like to test in orbit or in a recovery phase.
I rarely login to forums, rarely reply to threads, but do keep up on mod releases and some news stuff.
I have built overly complicated and large multi purpose ships only to use them once and never again.
I got annoyed with early career mode so edited my income/science to speed up unlocks (atleast a few times so far)
I like career mode for how it makes me work with less, and enjoy the science purpose (Id really like a midpoint between Sandbox/career mode so I could enjoy the science, without the management headaches) To me sandbox is like testing, and career gives purpose to doing science.
I really lack any ability to make my own ideas for mods work - in that I have had plenty of cool little part ideas only to have way to share the idea (cause I rarely login to forums/etc lol)
I have crashed the game due to running out of ram with 32b client so many times because I have run so many mods.
I have edited some config files to increase the DV of some engines or add more electrical output (damn thermal reactor) because it was annoying to have not enough power to land a ship on Kerban like I had wanted it to do without increasing the size of both engine and adding 2x more fuel.. Oh and the electric one was because of a mission launched sat, didnt have enough power via tiny solar panels at the time. (since fixed with Near future solar)
I ended up losing a multi year, 100+ missions with multiple launches of probes/satellites and 2-3 space stations / duna base / mun base / even a asteroid base or two - because I didnt back it up.
Never used part clipping, even if it makes the ship ugly or reduces performance.
Oh my worst offense.. reverting to vab, or hanger to rebuild if something goes wrong (ie launch failure) because I rarely use quick save (keep forgetting to use it)
Oh and finally - Never actually getting anything into orbit and leaving it there, after spending hours and hours designing, launching and reverting to rebuild..
When all else fails, add more boosters!