Is the concept of absolute right and wrong, good and evil still valid?

There is no absolute right, wrong, good and evil; nothing is written in stone, and even if it were, there would still be people who wouldnt care, just like laws.

Gotta say though, that based on your OP, that thought is mainly based on having something to believe in, which goes all the way back to the topic of religion, which i'll try not to get into, as it can easily turn into a mess in no time.

No never, good and evil does not exist but humans apply it to themselves because they believe they are above all others and while it is more of a moral question. Would say the only absolute right and wrong is over life itself though if a species goes extinct because of another it is just another part of life.

Now where are the snacks you promised unless you are a liar.

The topic itself is off-topic, it's so far from what Steamgifts is about. It's even more off-topic than begging for games or offering to trade. Meh.

That said, if right and wrong didn't exist, then saying so wouldn't be very valid either.

Good and evil aren't real (as in, good and evil aren't these 'universal' 'forces' 'wrestling' each other, its difficult to explain cause of their multiple meanings. Its all nothing more than a bunch of choices. These choices lead to some outcome. The outcome may be favorable, unfavorable, or indifferent. We may use the word good to describe a favorable outcome and we may use the word evil or bad to describe an unfavorable outcome (we can also use unfavorable and many more words, right/wrong). What makes an outcome good,bad,unchanged, right, wrong...etc, are personal beliefs or (i guess you could say) general beliefs (which could be personal beliefs that are in agreement with another person(s) beliefs, for example, in any country you go to, the murder of an innocent (technically there is no innocence, or is there?) person is considered wrong (generally speaking). Why do people believe what they believe? This is tough to explain. Personal beliefs CAN arise because of, or, from experience (this can branch into religion), religion (people believe in a religion because they think it gives them hope, generally speaking, and this branches into personal gain), personal gain ('selfish' or 'unselfish'). For example, slavery in the old colonial days of America, [im not getting into the history of the beginnings of slavery] many white people were scrounging for a reason they could believe in that made slavery justifiable. Some believed it was right because they were saving so much money and had so much efficiency as compared to the use of indentured servants. Some threw religion and crazy beliefs, like, black people were 'perpetual children' that needed to be constantly looked after and 'cared' for. Some people used racism to bury their guilt, they believed that they were born better than them no matter what. Some didn't even believe that they were human, so they worked the slaves like animals, which justified it for them. What made the white people have to dig for a reason/belief to justify slavery and racism? I would finish this but I have no time. Theres my 2 cents.

The new standard is simply: Quiche or not quiche

In reality? No.
In fantasy? Yes.
I refer you to the PlaneScape campaign setting.

This topic heavily touches on subjective opinions that stem from religious and cultural affiliation or thoughts.

Y u put this on SteamGifts?

Blue and Orange morality.