I rented for a number of years (probably about seven) before I finally bought. There were several factors that kept me renting as long as I did. First, as is often the case, was the difficulty in saving up for a down payment. Second was simple intimidation about diving into something I had no experience with and putting so much money into it. Third was a strange feeling that buying was somehow committing to something more than just getting a house. You know guys, we hate to commit!
I almost had an attitude of "As long as I am renting, I'm free to pick up and go anywhere, anytime at a moment's notice." It was as if I saw renting as an expression of my freedom of youth.
For the most part I would say reason three was just silliness on my part. You can always rent out your house if you decide to move on or sell it if you want to completely set yourself free from it. Part of my worry behind reason three was that my house might depreciate and I would have to hold it because I couldn't afford to take a bath selling it. But although that is always a possibility, it isn't likely and even if it does happen the market usually turns around in a couple of years.
The second shouldn't be an issue for you, since you have experience in the field already. Even for those who don't have prior experience like you, it isn't such a large barrier. Just take the time to educate yourself on the process.
The first is just a matter of practicalities and priorities. You just have to save what you can with your income to reach your goal.
Altogether, I wish I had purchased earlier. Maybe buying right out of college wouldn't have been the best for me, but in general the earlier you make an investment, any investment, the better off you are. Let the power of appreciation and compound interest work for you as long as possible by getting started with investing as young as possible.