look maybe you are one of those people who will LOVE casual sex. more power to you.
just please understand that when you are 60/70/80, or if you ever become chronically ill (God forbid), or something like that, you will rue the day you threw away devotion in search of "fun".
"Fun" is great. just realise that the "fun" usually has an end. you are not always going to be attractive and desirable. eventually you will have to resort to desperation. perhaps one day you will even have to start paying for attention.
i know a woman who was a "free spirit" throughout her adult life, and proud of it. academic woman, bright, well paid, lovely person, extremely beautiful... she had no shortage of offers. went on holiday withe gorgeous rich men, out to dinner every night, dancing on tables... then she turned 48 and suddenly realised her life had emptied of all admirers.
she sits alone in a flat, online, hoping to snag men who are into "mature" ladies. her life is a humiliation.
men who leave their wives in search of "fun" eventually suffer a similar fate. age doesn't discriminate.
just be careful.
the grass isn't always greener.
you might just need counselling before you throw it all away.