<human>: Can you succinctly summarize the text in 1-3 sentences?

I graduated about 2 months ago, and I am turning 18 in a few days. My parents stated today that they are not giving me any financial support nor gifts for either of these important events in my life. 

Am I being selfish for assuming I would be granted something? Their financial situation is quite stable, and I really do need the help for my upcoming university education.

I requested for a gift to just buy me my art supplies for one painting class I am taking, and they refused.

...I just feel a bit bummed out about this situation, I was expecting more support from them. On the flip side, I also feel immature and childish for expecting things such as money and presents, as I am almost an adult and need to learn to accept reality. 

What do you think, Reddit? Do I have a right to be upset or should I just suck it up and move on?
<bot>: Parents not giving any financial support or gifts for graduation and 18th birthday. Feeling upset, but not sure if it's a big deal or not.