I think it’s a combination of needs not being met ( fridgid ) , someone new , the excitement , the risks and lack of communication between couples .

My wife only cheated on me in college. She was horny and I was only able to see her once or twice a month. Upperclassmen were constantly asking her out. She couldn't handle her rum once she was out with another man. She enjoyed it. I might add that when I asked her to stop dating others, thus having sex with them, she stopped immediately.

Many times, it's neglect. Might not even be sexual. I think being accepted and respected is given short shrift when it comes to matters like this.

this is a gigantic generalization

men - don't want to be monogomous and need a little variety

women - don't cheat unless their emotional need isn't met

as with any generalization there is a lot of room for variety

Same principle as why ppl look for a new job while having one. Security and stability, so u can jump ship when it best suits you.

To win

Wrong question. They don't cheat but rebel against the subjugation or being cheated by a promise. They agree being forced by convention but later find that nothing works as agreed.

Lust

The need to want to experience situations or experiences that cannot be shared or satisfied with the same person, is the desire and attachment to something different that is not easily accessible.

Loneliness and disconnect with their partner

They neglected their relationship

In my neighbourhood it's usually the first reason.

Higher jumps, maxed EXP, Infinite ammo... 😏🤣 IDDQD

1 and 2

Cheat is wrong

For the plot

Emotional needs aren't being met

Emotional needs not met.

7) Human beings are hard-wired to seek multiple partners to ensure genetic diversity.

People’s lives are generally boring. Cheating for a lot of people is just about excitement.

Lust.

Someone pays attention to you
Incredible sex

(7) Low self esteem causing susceptibility to flattery and attention from creeps...?

Selfishness and indifference and disrespect to others

Lack of morals, and a lack of respect for themselves or their partner.

Thrill, sex, …monogamy is hard.

The world is upside down for them.

1, 2 & 3

All good reasons