Maybe this is too cheesy, but time is perhaps the most important resource. 
Time exist, thus we exist. We exist, thus  societies were formed. Societies exist,  thus trading became a norm. Trading exist, thus currency was created.
With time, I can get in shape, learn to sing, study, work to get money, explore,  and lots of other things.
Unlike money currently, time is limited.  One day we'll all run out of time. That is the way life goes.

Yes and no. If you only study the major cities then no.
The bigger the city, the bigger the tourism and more immigrants. 
Society is made up of a group of people that share the similar culture, values, folkwways, mores, and taboos. 
Places with people from other societies for immigration or tourist reasons could throw you off.
It's best to study a balance of big and small cities. To get an idea of rural and urban life within the society. 
Plus, some societies only assist their biggest city to make their country look better than it really is. 

Your body and brain are at its best when fully awake during the morning. Sadly, most societies are not that lively during the mornings so we often sleep part of the morning off and spend the rest of it waking up.
There was a study that showed most of the top businessmen woke up at 4am to have an extra two hours along with the effects of the morning.

Most people will be most productive during night due to the momentum of their brain processing/working. 

Remember, forgetting and ignoring are two different mechanisms. The brain has numerous mechanisms to combat bad memories to advoid mental damage or overpowering. 
If you were not able to forget or to rarely forget, then your brain will ignore the bad memories and other memories it deems as unnecessary/useless.
Having great memory doesn't have as much negatives as you'd think.

With all that being said, I'd study more subjects. If I didn't forget, then my mental age which equates to half of your IQ would increase at a giant pace.
I'd become perhaps one of the best public speakers in history.

I thought most people want more money so they can achieve happiness. People don't just want luxury for luxury but for feeling important, proud, superior, or an easier life which are all linked by feeling good, feeling happy.

Not true. I've spent quite a long time studying in libraries, while gaining information from people, the computers,  and of course books.
Libraries are not useless, it just has tougher competition.

Because they often don't need to adapt enough to create a biological change since besides humans and harpy eagles, they don't have too many predators. 
Those who did need to change became baboons which are stronger, louder, and more pack aggressive. 

Arrange marriages are a tradition, so it has to match up with the values of the culture.
Arrange marriages in the US wouldn't go well, since it conflicts with common American values.
For a culture more unitary, it could work, but an individualistic culture wouldn't be suited with an arranged marriage. 
Are arranged marriages bad? I can't be the judge of that since I am part of a society that doesn't have much experience with it, my values interfere with the idea of a unitary decision in my personal life.