Spoiling girl and boy image.
Giving bad name to boy and girls parents.
No doubt the bad name will come to other sibling of boy and girl.
Embarrassment after marriage if you are unemployed.
So later you will have ask for money. No self respect for yourself and no respect in your wife eyes.
Shaadi – Depends on you how much you want to spend.
jewelry – It is not compulsory to give so much jewellery. After marriage also you can buy for her
Lunch/Dinner – It is not necessary. Until you feed some needy people( who really need)
Smile – Smile on your and girls parents face ( Priceless)
Dua – You will have treasure of dua.
TOTAL – Happiness you will be satisfied.