Not gonna lie, I've considered it and still think about it sometimes, the major factors holding me back being the possibility of botched plastic surgery/looking unnatural, healing downtime and of course the price. When I weigh the pros and cons it's not worth it enough to me to actually go through with it.
I wish I can say I've truly learned to love every part of my face, but truthfully I look in the mirror a lot and think "well, my face could be a little sharper, my nose could be a little smaller", etc. Nothing that really bothers me, but minor tweaks I would be happy with - it's definitely vanity, I will admit that.
It's quite interesting to me how frowned upon this is in our culture - I wouldn't say I quite condone how normalized it is in certain countries but I feel like if you have the means to do so and if it would help your confidence, I don't really see how it is so different from, say, putting on makeup or wearing nice clothes, or any of the other things Yue Han mentioned. Yes, I realize it's a very big stretch to compare those when on one end you are going under the knife to alter your physical appearance or just temporarily putting something on you, but it's all vanity to varying degrees.