Mac vs. PC

Have been using a PC my entire computer life and am nearing the end of my current PC's usefulness so will be buying new one within next few months. Am wondering if I should switch to a MAC since I spend most of computer time doing photo editing and printing. So my questions are:
1.) Are MACs more photo friendly?

2.) Will I be able to use my current PS programs (have the full set of it but mostly use Elements)?
3.) How much of a learning curve between switching to MAC from PC?

4.) Will I be able to import my current photo library (thousands of pics) that are in PC JPEG format) from my back up external hardrive or will a MAC not recognize the files?

Thanks in advance,
Andrea