I have never actually finished a game/project.
Well, I finished Pong. And some little text based thing. But past that, I've got half a space invaders game done in C# (lost now), half a working RL in C++(still got), half a programming language (still in active development ), and now this current other game project RPG thing.

However, I'm getting to the stage of 'do I really want to do this?'. It's not the programming of it - I really do enjoy that.
The problem comes from all the arising problems - e.g.
The fact I can't find a noise library that works with either VS2010 to compile, or binary for Py2.7. (Well, I'm currently ignoring this by using a pregenerated image heightmap. But it doesn't feel the same as completely procedural)
The game has already been done.
Nobody's ever going to play it except me.
Etc.

I know that most of these are totally moot points, but they still seem to have the same kind of effect as analysis paralysis does - what am I actually doing?

Anyone know how to overcome these issues, of general 'this project is a waste of my time'?
I know it is *fun* to do, but I still think it could be more fun if I didn't feel like this about it.
This is probably a badly worded post. My apologies.
Thanks.

Try to make smaller games that are more easily finished to begin with, and post them on this or other forums. If you get people playing them and commenting you're probably going to be more motivated to make them better. Concentrate on making a simple game fun instead of making an awesome terrain engine that no one will ever see.

In the long run get a job at a game development studio, but if you're just beginning development perhaps you're doing this as training so you need to finish it first.

I've tried making smaller games, and I find they just don't interest me. I made Pong because I felt it was sort of something I should do, but it wasn't nearly as fun as the half-roguelike I made.

And before I can consider a job, I need to finish my GCSEs. Then my A-levels. Then finish Uni.

Play the games you make with your friends. Or make a game that you enjoy to play.

I tend to polish (I don't say finish, because nothing is ever truly finished, publishing is a kind of finishing, but I don't publish) my stuff that I actually use. My first game and first "big" project was a scorched earth game. As soon as it way playable, we played it with my friends. That was a huge motivation, so actually I polished the crap out of it (and sometimes we played with it for hours). Even adding new features three years after I started it. Another one is a minesweeper clone. Sometimes I played it for 3 hours without pause, it became an obsession... so i polished it.

I think too many people put down their games and their ability.

If you take a look at Minecraft. That game has sold over 1.2 million copies and made atleast $10 million.

But, as it is written in Java and easily decompiled, I have seen the source code and it's mediocre at best. I know MANY developers who could have easily written Minecraft, over the course of a few weeks / couple months.

Make some friends who are programmers, designers, artists. Play and share. Share your games with the internet. Post them on Facebook. Get feedback!

Scribble down every single idea you have. I have about 5 pads of A4 with 400 pages each that are so full of ideas and notes that I don't even know where to find anything, haha.

Get involved in games, find small game programming competitions. Join groups, classes. Mix programming games with learning fundamentals.

Something that worked really great for me, was a few things:
1: Study other people's code. Help out with open-source projects.
2. Learn a fundamental programming concept and think, "What kind of game would this be useful for?". Make the game! Keep it simple, but it really helps you learn those things.
3. Take your harder game ideas and make them in a simple scratch language first. I wrote a REALLY simple Lua interpreter that interfaces with OpenGL and wrote several games, one per day.
(It's called prototyping and is a very important skill.)

Lastly, if you really lose motivation. PLAY SOME GAMES. Isn't that why you wanted to make some in the first place?

Edit: What is the obsession with Space Invader clones? Tetris followed by PacMan then Mario, all the way!