should i stick to adscence or i am wasting my time?

You can monetize your site in any number of ways. I personally never made a lot with adsense, but there are people who do quite well. I went the micro-niche adsense route back when I first started. While I made some money, there were just so many variables and I felt I had little to no control over it. I think a lot of that was due to me still being green.

Depending on the traffic you get, Adsense may be a great way to monetize. You can test it out and check your data. Depending on the niche/type of site you have, there are other options as well. You could try selling banner space or concentrate on building a list and marketing to your visitors that way.

The best advice I can give is look at it as a business. Some things will get you a few bucks up front but won't give you lasting value, others will give you more long term potential and then finding that happy medium means getting a bit of both.

I've certainly had projects designed just to build up some capital to fund longer term, larger projects. It's an effective way to raise capital. Hope this helps a bit. I know it's not groundbreaking, but this business is really 90% common sense and 40% hard work