So,is rx100 mki is still worth to buy since there already have latest model of it and of course with more features?
Bdw,im not a serious photog.

That depends on your budget. Personally i would up my budget and get mkii. But if i want to go all out, might as well get something more decent rather than mere pocketable. Just did some research and found u can can get <rm1k for some older model m4:3 olympus or panasonic, interchangable. May lack modern features like focus peaking, wifi or touch screen but still better than cameraphone due to sensor size and better manual control. Only problem, older models maybe hard to find unless second hand. For overall i just take random pic, instagram and share on fb, smartphone is enough.