`Yes, the life can be great and happy without the soulmate, happier and greater than being with a wrong person for sure. However, the life is magically great and happy with that one about whom we are passionate and caring and loving, and being together...

Yes and no. At a dating site - should not because this is the scenario of scammers to mak you fall in love and become very vulnarable..., with a max of your trust and analyzing abilities/brains turned off... But YES - because Love at First Sight exists and is a magic...

LD relationships do work, but require so much more from each person! Sincerely, honesty with yourself, and writing, expressing every thought, talking with each other several times a day.. and also meeting somewhere - maybe for a weekend in 'neutral places" on this glove - to talk, to enjoy each other, or discover things which are tough to live with.. - LD relationship should be affordable... However, more investing (time, money, emotionally) means more cherishing it, more stamina, compromise to reach the dream...
There can be cultural differences, and there can be personal differences (incl. values, humour, manners, ambitions, how-we-spend-free-time, also those related to intimacy, money, children). If both take place - the relationship is doomed...