The fact that your parents could give you that money suggests you were already not at the bottom of the social mobility ladder. It's possible you've moved up the ladder, but it's also possible that your parents did the moving up the ladder (when home ownership was more accessible, jobs paid better), and that you haven't actually moved much from their position, even if you've got a better start in life.
Many millennials currently find themselves in this position, myself included. I'm better educated than my parents (by qualification), and I earn more than them, but they own properties and cars and go on holidays frequently, because they bought houses at the right time and earned more proportionally to their costs earlier in life. I'm still very much in the same socio-economic range as my parents are now, they did the moving earlier in their lives, I'm unlikely to be able to move.